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Education1999 - Ph.D. in Physics from University of California1999 - Ph.D. in Physics Department from University of California - San Diego1994 - Diploma in Physics from RWTH Aachen, Germany1994 - Diplom in Physik from RWTH Aachen University
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Positions2019 - Present: Professor, University of Illinois at Urbana-Champaign2014 - 2019: Senior Group Leader, Argonne National Laboratory2001 - 2019: Scientist, Argonne National Laboratory2005 - 2014: Materials Scientist, Argonne National Laboratory2001 - 2005: Assistant Materials Scientist, Argonne National Laboratory1999 - 2001: Postdoctoral Fellow, Los Alamos National Laboratory1999 - 2001: Postdoctoral Fellow, Los Alamos National Laboratory
Biography
Axel Hoffmann has obtained his Diploma degree in physics from the RWTH Aachen in 1994 and his PhD degree in physics from the University of California – San Diego in 1999. Subsequently he worked at the Los Alamos National Laboratory as a postdoctoral fellow. In 2001 he joined the Argonne National Laboratory as a staff scientist, and became in 2014 the Senior Group Leader of the Magnetic Thin Film Group. In 2019 he joined the Department of Materials Science an Engineering at the University of Illinois at Urbana-Champaign as a Founder Professor. His research interests encompass a wide variety of magnetism related subjects, including basic properties of magnetic heterostructures, spin-transport in novel geometries, and magnetization dynamics. He is an Associate Editor for the Journal of Applied Physics and a fellow of the American Physical Society, American Vacuum Society, and IEEE.
Publications
Axel Hoffmann
Spin transport modified by magnetic order
Journal of Magnetism and Magnetic Materials 563
(2022)
Martin Lonsky, Axel Hoffmann
Dynamic fingerprints of synthetic antiferromagnet nanostructures with interfacial Dzyaloshinskii–Moriya interaction
Journal of Applied Physics 132
(2022)
Axel Hoffmann, Wei Zhang
Antiferromagnets for spintronics
Journal of Magnetism and Magnetic Materials 553
(2022)
Axel Hoffmann, Shriram Ramanathan, Julie Grollier, Andrew D. Kent, Marcelo J. Rozenberg, Ivan K. Schuller, Oleg G. Shpyrko, Robert C. Dynes, Yeshaiahu Fainman, Alex Frano, Eric E. Fullerton, Giulia Galli, Vitaliy Lomakin, Shyue Ping Ong, Amanda K. Petford-Long, Jonathan A. Schuller, Mark D. Stiles, Yayoi Takamura, Yimei Zhu
Quantum materials for energy-efficient neuromorphic computing: Opportunities and challenges
APL Materials 10
(2022)
Soho Shim, M. Mehraeen, Joseph Sklenar, Junseok Oh, Jonathan Gibbons, Hilal Saglam, Axel Hoffmann, Steven S.-L. Zhang, Nadya Mason
Unidirectional Magnetoresistance in Antiferromagnet/Heavy-Metal Bilayers
Physical Review X 12
(2022)
Robin Klause, Axel Hoffmann
Multiple magnetic droplet solitions from exotic spin–orbit torques
Applied Physics Letters 120
(2022)
Martin Lonsky, Myoung-Woo Yoo, Yi-Siou Huang, Jiangchao Qian, Jian-Min Zuo, Axel Hoffmann
Structural and magnetic properties of Pt/Co/Mn-based multilayers
Physical Review Materials 6
(2022)
Ivan K. Schuller, Alex Frano, R. C. Dynes, Axel Hoffmann, Beatriz Noheda, Catherine Schuman, Abu Sebastian, Jian Shen
Neuromorphic computing: Challenges from quantum materials to emergent connectivity
Applied Physics Letters 120
(2022)
Wonbae Bang, M. T. Kaffash, M. T. Hossain, A. Hoffmann, J. B. Ketterson, M. B. Jungfleisch
Spin dynamics in permalloy nano-ellipses for honeycomb and square lattices
AIP Advances 12
(2022)
Axel Hoffmann
Thermal and hybridized magnons
Journal of Magnetism and Magnetic Materials 539
(2021)
Changjiang Liu, Yongming Luo, Deshun Hong, Steven S.-L. Zhang, Hilal Saglam, Yi Li, Yulin Lin, Brandon Fisher, John E. Pearson, J. Samuel Jiang, Hua Zhou, Jianguo Wen, Axel Hoffmann, Anand Bhattacharya
Electric field control of magnon spin currents in an antiferromagnetic insulator
Science Advances 7
(2021)
Kankan Cong, Eric Vetter, Liang Yan, Yi Li, Qi Zhang, Yuzan Xiong, Hongwei Qu, Richard D. Schaller, Axel Hoffmann, Alexander F. Kemper, Yongxin Yao, Jigang Wang, Wei You, Haidan Wen, Wei Zhang, Dali Sun
Coherent control of asymmetric spintronic terahertz emission from two-dimensional hybrid metal halides
Nature Communications 12
(2021)
Susan Kempinger, Yu-Sheng Huang, Paul Lammert, Michael Vogel, Axel Hoffmann, Vincent H. Crespi, Peter Schiffer, Nitin Samarth
Field-Tunable Interactions and Frustration in Underlayer-Mediated Artificial Spin Ice
Physical Review Letters 127
(2021)
Qiming Shao, Peng Li, Luqiao Liu, Hyunsoo Yang, Shunsuke Fukami, Armin Razavi, Hao Wu, Kang Wang, Frank Freimuth, Yuriy Mokrousov, Mark D. Stiles, Satoru Emori, Axel Hoffmann, Johan Akerman, Kaushik Roy, Jian-Ping Wang, See-Hun Yang, Kevin Garello, Wei Zhang
Roadmap of Spin–Orbit Torques
IEEE Transactions on Magnetics 57
(2021)
Saima Afroz Siddiqui, Deshun Hong, John E. Pearson, Axel Hoffmann
Antiferromagnetic Oxide Thin Films for Spintronic Applications
Coatings 11
(2021)
Mohammed Salah El Hadri, Jonathan Gibbons, Yuxuan Xiao, Haowen Ren, Hanu Arava, Yuzi Liu, Zhaowei Liu, Amanda Petford-Long, Axel Hoffmann, Eric E. Fullerton
Large spin-to-charge conversion in ultrathin gold-silicon multilayers
Physical Review Materials 5
(2021)
Joseph Sklenar, Yingjie Zhang, Matthias Benjamin Jungfleisch, Youngseok Kim, Yiran Xiao, Gregory J. MacDougall, Matthew J. Gilbert, Axel Hoffmann, Peter Schiffer, Nadya Mason
Proximity-induced anisotropic magnetoresistance in magnetized topological insulators
Applied Physics Letters 118
(2021)
Yi Li, Chenbo Zhao, Wei Zhang, Axel Hoffmann, Valentyn Novosad
Advances in coherent coupling between magnons and acoustic phonons
APL Materials 9
(2021)
Yi Li, Chenbo Zhao, Vivek P. Amin, Zhizhi Zhang, Michael Vogel, Yuzan Xiong, Joseph Sklenar, Ralu Divan, John Pearson, Mark D. Stiles, Wei Zhang, Axel Hoffmann, Valentyn Novosad
Phase-resolved electrical detection of coherently coupled magnonic devices
Applied Physics Letters 118
(2021)
K. Schultheiss, N. Sato, P. Matthies, L. Körber, K. Wagner, T. Hula, O. Gladii, J. E. Pearson, A. Hoffmann, M. Helm, J. Fassbender, H. Schultheiss
Time Refraction of Spin Waves
Physical Review Letters 126
(2021)
Sergi Lendínez, John E. Pearson, Axel Hoffmann, Valentyn Novosad, M. Benjamin Jungfleisch
Temperature-dependent collective magnetization reversal in a network of ferromagnetic nanowires
AIP Advances 11
(2021)
Yuzan Xiong, Yi Li, Rao Bidthanapally, Joseph Sklenar, Mouhamad Hammami, Sawyer Hall, Xufeng Zhang, Peng Li, John E. Pearson, Thomas Sebastian, Gopalan Srinivasan, Axel Hoffmann, Hongwei Qu, Valentine Novosad, Wei Zhang
Detecting Phase-Resolved Magnetization Dynamics by Magneto-Optic Effects at 1550 nm Wavelength
IEEE Transactions on Magnetics 57
(2021)
Chenbo Zhao, Zhizhi Zhang, Yi Li, Wei Zhang, John E. Pearson, Ralu Divan, Qingfang Liu, Valentine Novosad, Jianbo Wang, Axel Hoffmann
Direct Imaging of Resonant Phonon-Magnon Coupling
Physical Review Applied 15
(2021)
Yongming Luo, Changjiang Liu, Hilal Saglam, Yi Li, Wei Zhang, Steven S.-L. Zhang, John E. Pearson, Brandon Fisher, Tiejun Zhou, Anand Bhattacharya, Axel Hoffmann
Distinguishing antiferromagnetic spin sublattices via the spin Seebeck effect
Physical Review B 103
(2021)
David D. Awschalom, Chunhui Rita Du, Rui He, F. Joseph Heremans, Axel Hoffmann, Justin Hou, Hidekazu Kurebayashi, Yi Li, Luqiao Liu, Valentine Novosad, Joseph Sklenar, Sean E. Sullivan, Dali Sun, Hong Tang, Vasyl Tyberkevych, Cody Trevillian, Adam W. Tsen, Leah R. Weiss, Wei Zhang, Xufeng Zhang, Liuyan Zhao, Ch. W. Zollitsch
Quantum Engineering With Hybrid Magnonic Systems and Materials (Invited Paper)
IEEE Transactions on Quantum Engineering 2
(2021)
Peng Li, Jinjun Ding, Steven S.-L. Zhang, James Kally, Timothy Pillsbury, Olle G. Heinonen, Gaurab Rimal, Chong Bi, August DeMann, Stuart B. Field, Weigang Wang, Jinke Tang, Jidong Samuel Jiang, Axel Hoffmann, Nitin Samarth, Mingzhong Wu
Topological Hall Effect in a Topological Insulator Interfaced with a Magnetic Insulator
Nano Letters 21
(2020)
Yuzan Xiong, Zhizhi Zhang, Yi Li, Mouhamad Hammami, Joseph Sklenar, Laith Alahmed, Peng Li, Thomas Sebastian, Hongwei Qu, Axel Hoffmann, Valentine Novosad, Wei Zhang
Experimental parameters, combined dynamics, and nonlinearity of a magnonic-opto-electronic oscillator (MOEO)
Review of Scientific Instruments 91
(2020)
Wonbae Bang, R Silvani, A Hoffmann, J B Ketterson, F Montoncello, M B Jungfleisch
Ferromagnetic resonance in single vertices and 2D lattices macro-dipoles of elongated nanoelements: measurements and simulations
Journal of Physics: Condensed Matter 33
(2020)
Yi Li, Wei Zhang, Vasyl Tyberkevych, Wai-Kwong Kwok, Axel Hoffmann, Valentine Novosad
Hybrid magnonics: Physics, circuits, and applications for coherent information processing
Journal of Applied Physics 128
(2020)
Martin Lonsky, Axel Hoffmann
Dynamic excitations of chiral magnetic textures
APL Materials 8
(2020)
Martin Lonsky, Axel Hoffmann
Coupled skyrmion breathing modes in synthetic ferri- and antiferromagnets
Physical Review B 102
(2020)
F. L. Zeng, Z. Y. Ren, Y. Li, J. Y. Zeng, M. W. Jia, J. Miao, A. Hoffmann, W. Zhang, Y. Z. Wu, Z. Yuan
Intrinsic Mechanism for Anisotropic Magnetoresistance and Experimental Confirmation in
Co x Fe 1 − x
Physical Review Letters 125
(2020)
Saima A. Siddiqui, Joseph Sklenar, Kisung Kang, Matthew J. Gilbert, André Schleife, Nadya Mason, Axel Hoffmann
Metallic antiferromagnets
Journal of Applied Physics 128
(2020)
Yuzan Xiong, Yi Li, Mouhamad Hammami, Rao Bidthanapally, Joseph Sklenar, Xufeng Zhang, Hongwei Qu, Gopalan Srinivasan, John Pearson, Axel Hoffmann, Valentine Novosad, Wei Zhang
Probing magnon–magnon coupling in exchange coupled Y$$_3$$Fe$$_5$$O$$_{12}$$/Permalloy bilayers with magneto-optical effects
Scientific Reports 10
(2020)
Wonbae Bang, James Sturm, Raffaele Silvani, Mojtaba T. Kaffash, Axel Hoffmann, John B. Ketterson, Federico Montoncello, M. Benjamin Jungfleisch
Influence of the Vertex Region on Spin Dynamics in Artificial Kagome Spin Ice
Physical Review Applied 14
(2020)
Sergi Lendínez, Tomas Polakovic, Junjia Ding, M. Benjamin Jungfleisch, John Pearson, Axel Hoffmann, Valentine Novosad
Temperature-dependent anisotropic magnetoresistance and spin-torque-driven vortex dynamics in a single microdisk
Journal of Applied Physics 127
(2020)
Mojtaba Taghipour Kaffash, Wonbae Bang, Sergi Lendinez, Axel Hoffmann, John B. Ketterson, M. Benjamin Jungfleisch
Control of spin dynamics in artificial honeycomb spin-ice-based nanodisks
Physical Review B 101
(2020)
Chenbo Zhao, Yi Li, Zhizhi Zhang, Michael Vogel, John E. Pearson, Jianbo Wang, Wei Zhang, Valentine Novosad, Qingfang Liu, Axel Hoffmann
Phonon Transport Controlled by Ferromagnetic Resonance
Physical Review Applied 13
(2020)
Yi Li, Wei Cao, Vivek P. Amin, Zhizhi Zhang, Jonathan Gibbons, Joseph Sklenar, John Pearson, Paul M. Haney, Mark D. Stiles, William E. Bailey, Valentine Novosad, Axel Hoffmann, Wei Zhang
Coherent Spin Pumping in a Strongly Coupled Magnon-Magnon Hybrid System
Physical Review Letters 124
(2020)
Junjia Ding, Wei Zhang, M. Benjamin Jungfleisch, John E. Pearson, Hendrik Ohldag, Valentine Novosad, Axel Hoffmann
Direct observation of spin accumulation in Cu induced by spin pumping
Physical Review Research 2
(2020)
José Holanda, Hilal Saglam, Vedat Karakas, Zhizhi Zang, Yi Li, Ralu Divan, Yuzi Liu, Ozhan Ozatay, Valentine Novosad, John E. Pearson, Axel Hoffmann
Magnetic Damping Modulation in
IrMn 3 / Ni 80 Fe 20
Physical Review Letters 124
(2020)
Jinho Lim, Wonbae Bang, Jonathan Trossman, Dovran Amanov, C. C. Tsai, Matthias B. Jungfleisch, Axel Hoffmann, John B. Ketterson
Magnetostatic spin-waves in an yttrium iron garnet thin film: Comparison between theory and experiment for arbitrary field directions
Journal of Applied Physics 126
(2019)
Zhizhi Zhang, Michael Vogel, José Holanda, M. Benjamin Jungfleisch, Changjiang Liu, Yi Li, John E. Pearson, Ralu Divan, Wei Zhang, Axel Hoffmann, Yan Nie, Valentyn Novosad
Spin-wave frequency division multiplexing in an yttrium iron garnet microstripe magnetized by inhomogeneous field
Applied Physics Letters 115
(2019)
Zidong Wang, Xichao Zhang, Jing Xia, Le Zhao, Keyu Wu, Guoqiang Yu, Kang L. Wang, Xiaoxi Liu, Suzanne G. E. te Velthuis, Axel Hoffmann, Yan Zhou, Wanjun Jiang
Generation and Hall effect of skyrmions enabled using nonmagnetic point contacts
Physical Review B 100
(2019)
Zhizhi Zhang, Michael Vogel, M. Benjamin Jungfleisch, Axel Hoffmann, Yan Nie, Valentine Novosad
Tuning edge-localized spin waves in magnetic microstripes by proximate magnetic structures
Physical Review B 100
(2019)
Wonbae Bang, F. Montoncello, M. T. Kaffash, A. Hoffmann, J. B. Ketterson, M. B. Jungfleisch
Ferromagnetic resonance spectra of permalloy nano-ellipses as building blocks for complex magnonic lattices
Journal of Applied Physics 126
(2019)
Sergi Lendinez, Yi Li, Weipeng Wu, Mojtaba Taghipour Kaffash, Qi Zhang, Wei Zhang, John E. Pearson, Ralu Divan, Richard D. Schaller, Axel Hoffmann, Haidan Wen, Matthias Benjamin Jungfleisch
Terahertz emission from magnetic thin film and patterned heterostructures
Spintronics XII
(2019)
Jinho Lim, Wonbae Bang, Jonathan Trossman, Andreas Kreisel, Matthias Benjamin Jungfleisch, Axel Hoffmann, C. C. Tsai, John B. Ketterson
Direct Detection of Multiple Backward Volume Modes in Yttrium Iron Garnet at Micron Scale Wavelengths
The 37th International Symposium on Dynamical Properties of Solids
(2019)
Yi Li, Tomas Polakovic, Yong-Lei Wang, Jing Xu, Sergi Lendinez, Zhizhi Zhang, Junjia Ding, Trupti Khaire, Hilal Saglam, Ralu Divan, John Pearson, Wai-Kwong Kwok, Zhili Xiao, Valentine Novosad, Axel Hoffmann, Wei Zhang
Strong Coupling between Magnons and Microwave Photons in On-Chip Ferromagnet-Superconductor Thin-Film Devices
Physical Review Letters 123
(2019)
Peng Li, James Kally, Steven S.-L. Zhang, Timothy Pillsbury, Jinjun Ding, Gyorgy Csaba, Junjia Ding, J. S. Jiang, Yunzhi Liu, Robert Sinclair, Chong Bi, August DeMann, Gaurab Rimal, Wei Zhang, Stuart B. Field, Jinke Tang, Weigang Wang, Olle G. Heinonen, Valentine Novosad, Axel Hoffmann, Nitin Samarth, Mingzhong Wu
Magnetization switching using topological surface states
Science Advances 5
(2019)
Zhizhi Zhang, Michael Vogel, José Holanda, Junjia Ding, M. Benjamin Jungfleisch, Yi Li, John E. Pearson, Ralu Divan, Wei Zhang, Axel Hoffmann, Yan Nie, Valentine Novosad
Controlled interconversion of quantized spin wave modes via local magnetic fields
Physical Review B 100
(2019)
Yi Li, Fanlong Zeng, Hilal Saglam, Joseph Sklenar, John E. Pearson, Thomas Sebastian, Yizheng Wu, Axel Hoffmann, Wei Zhang
Optical Detection of Phase-Resolved Ferromagnetic Resonance in Epitaxial FeCo Thin Films
IEEE Transactions on Magnetics 55
(2019)
Deshun Hong, Changjiang Liu, John E. Pearson, Axel Hoffmann, Dillon D. Fong, Anand Bhattacharya
Spin Seebeck effect in insulating SrFeO3−δ films
Applied Physics Letters 114
(2019)
Alessandro Sola, Vittorio Basso, Michaela Kuepferling, Massimo Pasquale, Daniel Carsten ne Meier, Gunter Reiss, Timo Kuschel, Takashi Kikkawa, Ken-ichi Uchida, Eiji Saitoh, Hyungyu Jin, Sarah J. Watzman, Steve Boona, Joseph Heremans, Matthias B. Jungfleisch, Wei Zhang, John E. Pearson, Axel Hoffmann, Hans W. Schumacher
Spincaloritronic Measurements: A Round Robin Comparison of the Longitudinal Spin Seebeck Effect
IEEE Transactions on Instrumentation and Measurement 68
(2019)
Yi Li, Fanlong Zeng, Steven S.-L. Zhang, Hyeondeok Shin, Hilal Saglam, Vedat Karakas, Ozhan Ozatay, John E. Pearson, Olle G. Heinonen, Yizheng Wu, Axel Hoffmann, Wei Zhang
Giant Anisotropy of Gilbert Damping in Epitaxial CoFe Films
Physical Review Letters 122
(2019)
Yi Li, Hilal Saglam, Zhizhi Zhang, Rao Bidthanapally, Yuzan Xiong, John E. Pearson, Valentine Novosad, Hongwei Qu, Gopalan Srinivasan, Axel Hoffmann, Wei Zhang
Simultaneous Optical and Electrical Spin-Torque Magnetometry with Phase-Sensitive Detection of Spin Precession
Physical Review Applied 11
(2019)
Wanjun Jiang, Sheng Zhang, Xiao Wang, Charudatta Phatak, Qiang Wang, Wei Zhang, Matthias Benjamin Jungfleisch, John E. Pearson, Yizhou Liu, Jiadong Zang, Xuemei Cheng, Amanda Petford-Long, Axel Hoffmann, Suzanne G. E. te Velthuis
Quantifying chiral exchange interaction for Néel-type skyrmions via Lorentz transmission electron microscopy
Physical Review B 99
(2019)
Jinho Lim, Wonbae Bang, Jonathan Trossman, Andreas Kreisel, Matthias Benjamin Jungfleisch, Axel Hoffmann, C. C. Tsai, John B. Ketterson
Study of Surface Character of Micrometer-Scale Dipole-Exchange Spin Waves in an Yttrium Iron Garnet Film
IEEE Transactions on Magnetics 55
(2019)
Jinho Lim, Wonbae Bang, Jonathan Trossman, Andreas Kreisel, Matthias Benjamin Jungfleisch, Axel Hoffmann, C. C. Tsai, John B. Ketterson
Direct detection of multiple backward volume modes in yttrium iron garnet at micron scale wavelengths
Physical Review B 99
(2019)
Wonbae Bang, F. Montoncello, M. B. Jungfleisch, A. Hoffmann, L. Giovannini, J. B. Ketterson
Angular-dependent spin dynamics of a triad of permalloy macrospins
Physical Review B 99
(2019)
Sheng Wang, Junjia Ding, Xiawei Guan, Matthias B. Jungfleisch, Zhizhi Zhang, Xiaojie Wang, Wei Gu, Yunlai Zhu, John E. Pearson, Xiaomin Cheng, Axel Hoffmann, Xiangshui Miao
Linear and nonlinear spin-wave dynamics in ultralow-damping microstructured Co2FeAl Heusler waveguide
Applied Physics Letters 113
(2018)
N. Loayza, M. B. Jungfleisch, A. Hoffmann, M. Bailleul, V. Vlaminck
Fresnel diffraction of spin waves
Physical Review B 98
(2018)
Wonbae Bang, F. Montoncello, A. Hoffmann, L. Giovannini, J. B. Ketterson
Thickness dependence of spin wave dynamics in three-fold nano-ellipse clusters
AIP Advances 8
(2018)
Joseph Sklenar, Wei Zhang, Matthias Benjamin Jungfleisch, Axel Hoffmann
Unidirectional response in spin-torque driven magnetization dynamics
Spintronics XI
(2018)
Hilal Saglam, J. Carlos Rojas-Sanchez, Sebastien Petit, Michel Hehn, Wei Zhang, John E. Pearson, Stephane Mangin, Axel Hoffmann
Independence of spin-orbit torques from the exchange bias direction in
N i 81 F e 19 / IrMn
Physical Review B 98
(2018)
Tomas Polakovic, Sergi Lendinez, John E. Pearson, Axel Hoffmann, Volodymyr Yefremenko, Clarence L. Chang, Whitney Armstrong, Kawtar Hafidi, Goran Karapetrov, Valentine Novosad
Room temperature deposition of superconducting niobium nitride films by ion beam assisted sputtering
APL Materials 6
(2018)
I. V. Soldatov, W. Jiang, S. G. E. te Velthuis, A. Hoffmann, R. Schäfer
Size analysis of sub-resolution objects by Kerr microscopy
Applied Physics Letters 112
(2018)
Tao Liu, Yufan Li, Lei Gu, Junjia Ding, Houchen Chang, P. A. Praveen Janantha, Boris Kalinikos, Valentyn Novosad, Axel Hoffmann, Ruqian Wu, C. L. Chien, Mingzhong Wu
Nontrivial Nature and Penetration Depth of Topological Surface States in
SmB 6
Physical Review Letters 120
(2018)
Matthias B. Jungfleisch, Qi Zhang, Wei Zhang, John E. Pearson, Richard D. Schaller, Haidan Wen, Axel Hoffmann
Control of Terahertz Emission by Ultrafast Spin-Charge Current Conversion at Rashba Interfaces
Physical Review Letters 120
(2018)
Matthias B. Jungfleisch, Axel Hoffmann
A new twist on phonons
Nature Physics 14
(2018)
Matthias B. Jungfleisch, Wei Zhang, Axel Hoffmann
Perspectives of antiferromagnetic spintronics
Physics Letters A 382
(2018)
Wonbae Bang, Jinho Lim, Jonathan Trossman, Dovran Amanov, Matthias B. Jungfleisch, Axel Hoffmann, John B. Ketterson
Measurements of long-wavelength spin waves for the magnetic field in the Damon-Eshbach, backward-volume and forward-volume geometries of an yttrium iron garnet film
Journal of Applied Physics 123
(2018)
J. Železný, P. Wadley, K. Olejník, A. Hoffmann, H. Ohno
Spin transport and spin torque in antiferromagnetic devices
Nature Physics 14
(2018)
F. Montoncello, L. Giovannini, Wonbae Bang, J. B. Ketterson, M. B. Jungfleisch, A. Hoffmann, B. W. Farmer, L. E. De Long
Mutual influence between macrospin reversal order and spin-wave dynamics in isolated artificial spin-ice vertices
Physical Review B 97
(2018)
Wonbae Bang, Matthias B. Jungfleisch, Federico Montoncello, Barry W. Farmer, Pavel N. Lapa, Axel Hoffmann, Loris Giovannini, Lance E. De Long, John B. Ketterson
Coupled macrospins: Mode dynamics in symmetric and asymmetric vertices
AIP Advances 8
(2017)
Matthias B. Jungfleisch, Joseph Sklenar, Junjia Ding, Jungsik Park, John E. Pearson, Valentine Novosad, Peter Schiffer, Axel Hoffmann
High-Frequency Dynamics Modulated by Collective Magnetization Reversal in Artificial Spin Ice
Physical Review Applied 8
(2017)
Wonbae Bang, Matthias B. Jungfleisch, Jinho Lim, Jonathan Trossman, C. C. Tsai, Axel Hoffmann, John B. Ketterson
Excitation of the three principal spin waves in yttrium iron garnet using a wavelength-specific multi-element antenna
AIP Advances 8
(2017)
C. Fang, C. H. Wan, B. S. Yang, J. Y. Qin, B. S. Tao, H. Wu, X. Zhang, X. F. Han, A. Hoffmann, X. M. Liu, Z. M. Jin
Determination of spin relaxation times in heavy metals via second-harmonic spin injection magnetoresistance
Physical Review B 96
(2017)
Pavel N. Lapa, Junjia Ding, Charudatta Phatak, John E. Pearson, J. S. Jiang, Axel Hoffmann, Valentine Novosad
Magnetic vortex nucleation/annihilation in artificial-ferrimagnet microdisks
Journal of Applied Physics 122
(2017)
Wanjun Jiang, Gong Chen, Kai Liu, Jiadong Zang, Suzanne G.E. te Velthuis, Axel Hoffmann
Skyrmions in magnetic multilayers
Physics Reports 704
(2017)
Pavel N. Lapa, Junjia Ding, John E. Pearson, Valentine Novosad, J. S. Jiang, Axel Hoffmann
Magnetization reversal in Py/Gd heterostructures
Physical Review B 96
(2017)
Joseph Sklenar, Wei Zhang, Matthias B. Jungfleisch, Hilal Saglam, Scott Grudichak, Wanjun Jiang, John E. Pearson, John B. Ketterson, Axel Hoffmann
Unidirectional spin-torque driven magnetization dynamics
Physical Review B 95
(2017)
Frances Hellman, Axel Hoffmann, Yaroslav Tserkovnyak, Geoffrey S. D. Beach, Eric E. Fullerton, Chris Leighton, Allan H. MacDonald, Daniel C. Ralph, Dario A. Arena, Hermann A. Dürr, Peter Fischer, Julie Grollier, Joseph P. Heremans, Tomas Jungwirth, Alexey V. Kimel, Bert Koopmans, Ilya N. Krivorotov, Steven J. May, Amanda K. Petford-Long, James M. Rondinelli, Nitin Samarth, Ivan K. Schuller, Andrei N. Slavin, Mark D. Stiles, Oleg Tchernyshyov, André Thiaville, Barry L. Zink
Interface-induced phenomena in magnetism
Reviews of Modern Physics 89
(2017)
Pavel N. Lapa, Igor V. Roshchin, Junjia Ding, John. E. Pearson, Valentine Novosad, J. S. Jiang, Axel Hoffmann
Magnetoresistive detection of strongly pinned uncompensated magnetization in antiferromagnetic FeMn
Physical Review B 95
(2017)
M. B. Jungfleisch, W. Zhang, R. Winkler, A. Hoffmann
Spin-Orbit Torques and Spin Dynamics
Springer Series in Solid-State Sciences
(2017)
Matthias B. Jungfleisch, Junjia Ding, Wei Zhang, Wanjun Jiang, John E. Pearson, Valentine Novosad, Axel Hoffmann
Insulating Nanomagnets Driven by Spin Torque
Nano Letters 17
(2016)
Joseph Sklenar, Wei Zhang, Matthias B. Jungfleisch, Wanjun Jiang, Hilal Saglam, John E. Pearson, John B. Ketterson, Axel Hoffmann
Perspective: Interface generation of spin-orbit torques
Journal of Applied Physics 120
(2016)
H. Saglam, W. Zhang, M. B. Jungfleisch, J. Sklenar, J. E. Pearson, J. B. Ketterson, A. Hoffmann
Spin transport through the metallic antiferromagnet FeMn
Physical Review B 94
(2016)
Wanjun Jiang, Xichao Zhang, Guoqiang Yu, Wei Zhang, Xiao Wang, M. Benjamin Jungfleisch, John E. Pearson, Xuemei Cheng, Olle Heinonen, Kang L. Wang, Yan Zhou, Axel Hoffmann, Suzanne G. E. te Velthuis
Direct observation of the skyrmion Hall effect
Nature Physics 13
(2016)
Peng Li, Tao Liu, Houchen Chang, Alan Kalitsov, Wei Zhang, Gyorgy Csaba, Wei Li, Daniel Richardson, August DeMann, Gaurab Rimal, Himadri Dey, J. S. Jiang, Wolfgang Porod, Stuart B. Field, Jinke Tang, Mario C. Marconi, Axel Hoffmann, Oleg Mryasov, Mingzhong Wu
Spin–orbit torque-assisted switching in magnetic insulator thin films with perpendicular magnetic anisotropy
Nature Communications 7
(2016)
V. Vlaminck, W. Yánez, J. Hoffman, A. Hoffmann, D. Niebieskikwiat
Tailoring transport properties of phase-separated manganite films with ordered magnetic nanostructures
Physical Review B 94
(2016)
C. Phatak, S. Zhang, W. Jiang, S. G. E. te Velthuis, A. Hoffmann, J. F. Mitchell, H. Zheng, M. R. Norman, A. Petford-Long
Domain behavior in functional materials studied using Lorentz microscopy
Microscopy and Microanalysis 22
(2016)
M. B. Jungfleisch, W. Zhang, J. Sklenar, W. Jiang, J. E. Pearson, J. B. Ketterson, A. Hoffmann
Interface-driven spin-torque ferromagnetic resonance by Rashba coupling at the interface between nonmagnetic materials
Physical Review B 93
(2016)
Junjia Ding, Pavel Lapa, Shikha Jain, Trupti Khaire, Sergi Lendinez, Wei Zhang, Matthias B. Jungfleisch, Christian M. Posada, Volodymyr G. Yefremenko, John E. Pearson, Axel Hoffmann, Valentine Novosad
Spin Vortex Resonance in Non-planar Ferromagnetic Dots
Scientific Reports 6
(2016)
Olle Heinonen, Wanjun Jiang, Hamoud Somaily, Suzanne G. E. te Velthuis, Axel Hoffmann
Generation of magnetic skyrmion bubbles by inhomogeneous spin Hall currents
Physical Review B 93
(2016)
Wanjun Jiang, Wei Zhang, Guoqiang Yu, M. Benjamin Jungfleisch, Pramey Upadhyaya, Hamoud Somaily, John E. Pearson, Yaroslav Tserkovnyak, Kang L. Wang, Olle Heinonen, Suzanne G. E. te Velthuis, Axel Hoffmann
Mobile Néel skyrmions at room temperature: status and future
AIP Advances 6
(2016)
Joseph Sklenar, Wei Zhang, Matthias B. Jungfleisch, Wanjun Jiang, Hilal Saglam, John E. Pearson, John B. Ketterson, Axel Hoffmann
Spin Hall effects in metallic antiferromagnets – perspectives for future spin-orbitronics
AIP Advances 6
(2016)
Stephen M. Wu, Wei Zhang, Amit KC, Pavel Borisov, John E. Pearson, J. Samuel Jiang, David Lederman, Axel Hoffmann, Anand Bhattacharya
Antiferromagnetic Spin Seebeck Effect
Physical Review Letters 116
(2016)
M. B. Jungfleisch, W. Zhang, E. Iacocca, J. Sklenar, J. Ding, W. Jiang, S. Zhang, J. E. Pearson, V. Novosad, J. B. Ketterson, O. Heinonen, A. Hoffmann
Dynamic response of an artificial square spin ice
Physical Review B 93
(2016)
Wei Zhang, Joseph Sklenar, Bo Hsu, Wanjun Jiang, Matthias B. Jungfleisch, Jiao Xiao, Frank Y. Fradin, Yaohua Liu, John E. Pearson, John B. Ketterson, Zheng Yang, Axel Hoffmann
Research Update: Spin transfer torques in permalloy on monolayer MoS2
APL Materials 4
(2016)
Pavel N. Lapa, Trupti Khaire, Junjia Ding, John E. Pearson, Valentyn Novosad, Axel Hoffmann, J. S. Jiang
Spin valve with non-collinear magnetization configuration imprinted by a static magnetic field
AIP Advances 6
(2016)
J. Ding, S. Jain, P. N. Lapa, T. Khaire, S. Lendinez, C. M. Posada, W. Zhang, J. E. Pearson, A. Hoffmann, V. Novosad
Gyrotropic frequency control in ferromagnetic dots using a nanoscale vortex barrier
AIP Advances 6
(2016)
M. B. Jungfleisch, W. Zhang, J. Sklenar, J. Ding, W. Jiang, H. Chang, F. Y. Fradin, J. E. Pearson, J. B. Ketterson, V. Novosad, M. Wu, A. Hoffmann
Large Spin-Wave Bullet in a Ferrimagnetic Insulator Driven by the Spin Hall Effect
Physical Review Letters 116
(2016)
Matthias B. Jungfleisch, Wei Zhang, Junjia Ding, Wanjun Jiang, Joseph Sklenar, John E. Pearson, John B. Ketterson, Axel Hoffmann
All-electrical detection of spin dynamics in magnetic antidot lattices by the inverse spin Hall effect
Applied Physics Letters 108
(2016)
Shaozhen Li, Wei Zhang, Junjia Ding, John E. Pearson, Valentine Novosad, Axel Hoffmann
Epitaxial patterning of nanometer-thick Y3Fe5O12films with low magnetic damping
Nanoscale 8
(2016)
Joseph Sklenar, Wei Zhang, Matthias B. Jungfleisch, Wanjun Jiang, Houchen Chang, John E. Pearson, Mingzhong Wu, John B. Ketterson, Axel Hoffmann
Driving and detecting ferromagnetic resonance in insulators with the spin Hall effect
Physical Review B 92
(2015)
Ali C. Basaran, Javier E. Villegas, J.S. Jiang, Axel Hoffmann, Ivan K. Schuller
Mesoscopic magnetism and superconductivity
MRS Bulletin 40
(2015)
Wei Zhang, Matthias B. Jungfleisch, Frank Freimuth, Wanjun Jiang, Joseph Sklenar, John E. Pearson, John B. Ketterson, Yuriy Mokrousov, Axel Hoffmann
All-electrical manipulation of magnetization dynamics in a ferromagnet by antiferromagnets with anisotropic spin Hall effects
Physical Review B 92
(2015)
Axel Hoffmann, Sam D. Bader
Opportunities at the Frontiers of Spintronics
Physical Review Applied 4
(2015)
Matthias Benjamin Jungfleisch, Wei Zhang, Wanjun Jiang, Axel Hoffmann
New Pathways Towards Efficient Metallic Spin Hall Spintronics
SPIN 05
(2015)
Axel Hoffmann, Helmut Schultheiß
Mesoscale magnetism
Current Opinion in Solid State and Materials Science 19
(2015)
Wanjun Jiang, Pramey Upadhyaya, Wei Zhang, Guoqiang Yu, M. Benjamin Jungfleisch, Frank Y. Fradin, John E. Pearson, Yaroslav Tserkovnyak, Kang L. Wang, Olle Heinonen, Suzanne G. E. te Velthuis, Axel Hoffmann
Blowing magnetic skyrmion bubbles
Science 349
(2015)
Saptarshi Das, Wei Zhang, Laxman Raju Thoutam, Zhili Xiao, Axel Hoffmann, Marcel Demarteau, Andreas Roelofs
A Small Signal Amplifier Based on Ionic Liquid Gated Black Phosphorous Field Effect Transistor
IEEE Electron Device Letters 36
(2015)
A. Hoffmann, W. Jiang, P. Upadhyaya, Q. Yang, G. Yu, W. Zhang, M. Jungfleisch, F. Y. Fradin, J. E. Pearson, Z. Wang, K. L. Wong, M. Akyol, L. Chang, M. Lang, Y. Fan, Q. Wen, H. Zhang, R. N. Schwartz, Y. Tserkovnyak, K. L. Wang, O. Heinonen, S. G. Te Velthuis
Electric manipulation of skyrmions in metals and insulators
2015 IEEE Magnetics Conference (INTERMAG)
(2015)
Wei Zhang, Matthias B. Jungfleisch, Wanjun Jiang, Yaohua Liu, John E. Pearson, Suzanne G. E. te Velthuis, Axel Hoffmann, Frank Freimuth, Yuriy Mokrousov
Reduced spin-Hall effects from magnetic proximity
Physical Review B 91
(2015)
Stephen M. Wu, Frank Y. Fradin, Jason Hoffman, Axel Hoffmann, Anand Bhattacharya
Spin Seebeck devices using local on-chip heating
Journal of Applied Physics 117
(2015)
Matthias B. Jungfleisch, Wei Zhang, Wanjun Jiang, Houchen Chang, Joseph Sklenar, Stephen M. Wu, John E. Pearson, Anand Bhattacharya, John B. Ketterson, Mingzhong Wu, Axel Hoffmann
Spin waves in micro-structured yttrium iron garnet nanometer-thick films
Journal of Applied Physics 117
(2015)
Wei Zhang, Matthias B. Jungfleisch, Wanjun Jiang, John E. Pearson, Axel Hoffmann
Spin pumping and inverse Rashba-Edelstein effect in NiFe/Ag/Bi and NiFe/Ag/Sb
Journal of Applied Physics 117
(2015)
Wei Zhang, Matthias B. Jungfleisch, Wanjun Jiang, Joseph Sklenar, Frank Y. Fradin, John E. Pearson, John B. Ketterson, Axel Hoffmann
Spin pumping and inverse spin Hall effects—Insights for future spin-orbitronics (invited)
Journal of Applied Physics 117
(2015)
Dustin A. Gilbert, Li Ye, Aïda Varea, Sebastià Agramunt-Puig, Nuria del Valle, Carles Navau, José Francisco López-Barbera, Kristen S. Buchanan, Axel Hoffmann, Alvar Sánchez, Jordi Sort, Kai Liu, Josep Nogués
A new reversal mode in exchange coupled antiferromagnetic/ferromagnetic disks: distorted viscous vortex
Nanoscale 7
(2015)
Wei Zhang, Matthias B. Jungfleisch, Wanjun Jiang, John E. Pearson, Axel Hoffmann, Frank Freimuth, Yuriy Mokrousov
Spin Hall Effects in Metallic Antiferromagnets
Physical Review Letters 113
(2014)
Saptarshi Das, Wei Zhang, Marcel Demarteau, Axel Hoffmann, Madan Dubey, Andreas Roelofs
Tunable Transport Gap in Phosphorene
Nano Letters 14
(2014)
O. Arnache, G. Campillo, A. Hoffmann
Study of critical exponents in doped La2/3Ca1/3Mn1-y Fe y O3 (y = 0, 0.03) manganite films
Applied Physics A 117
(2014)
K. Vogt, F.Y. Fradin, J.E. Pearson, T. Sebastian, S.D. Bader, B. Hillebrands, A. Hoffmann, H. Schultheiss
Realization of a spin-wave multiplexer
Nature Communications 5
(2014)
Axel Hoffmann
Preface: Proceedings of the 58th Annual Conference on Magnetism and Magnetic Materials, Denver, Colorado, USA, November 2013
Journal of Applied Physics 115
(2014)
Axel Hoffmann
Preface to Special Topic: Invited Papers of the 58th Annual Conference on Magnetism and Magnetic Materials, Denver, Colorado, USA, November 2013
Journal of Applied Physics 115
(2014)
Tao Liu, Houchen Chang, Vincent Vlaminck, Yiyan Sun, Michael Kabatek, Axel Hoffmann, Longjiang Deng, Mingzhong Wu
Ferromagnetic resonance of sputtered yttrium iron garnet nanometer films
Journal of Applied Physics 115
(2014)
Houchen Chang, Peng Li, Wei Zhang, Tao Liu, Axel Hoffmann, Longjiang Deng, Mingzhong Wu
Nanometer-Thick Yttrium Iron Garnet Films With Extremely Low Damping
IEEE Magnetics Letters 5
(2014)
Wei Zhang, Vincent Vlaminck, John E. Pearson, Ralu Divan, Samuel D. Bader, Axel Hoffmann
Determination of the Pt spin diffusion length by spin-pumping and spin Hall effect
Applied Physics Letters 103
(2013)
Lihui Bai, P. Hyde, Y. S. Gui, C.-M. Hu, V. Vlaminck, J. E. Pearson, S. D. Bader, A. Hoffmann
Universal Method for Separating Spin Pumping from Spin Rectification Voltage of Ferromagnetic Resonance
Physical Review Letters 111
(2013)
Axel Hoffmann
Spin Hall Effects in Metals
IEEE Transactions on Magnetics 49
(2013)
Yiyan Sun, Houchen Chang, Michael Kabatek, Young-Yeal Song, Zihui Wang, Michael Jantz, William Schneider, Mingzhong Wu, E. Montoya, B. Kardasz, B. Heinrich, Suzanne G. E. te Velthuis, Helmut Schultheiss, Axel Hoffmann
Damping in Yttrium Iron Garnet Nanoscale Films Capped by Platinum
Physical Review Letters 111
(2013)
Marcio Assolin Corrêa, Vivian Montardo Escobar, Osvaldo Trigueiro-Neto, Felipe Bohn, Kelly Daiane Sossmeier, Claudionor Gomes Bezerra, Carlos Chesman, John Pearson, Axel Hoffmann
Magnetization Dynamics Through Magnetoimpedance Effect in Isotropic Co2FeAl/Au/Co2FeAl Full-Heusler Alloy Trilayer Films
Applied Physics Express 6
(2013)
V. Vlaminck, J. E. Pearson, S. D. Bader, A. Hoffmann
Dependence of spin-pumping spin Hall effect measurements on layer thicknesses and stacking order
Physical Review B 88
(2013)
Maria E. Gomez, Gloria E. Campillo, Sandra Diez, Axel Hoffmann, Wilson Lopera
Influence of the Thickness of the Ferro- and Antiferromagnetic Phases on Magnetic Properties in Epitaxial Heterostructures Based on Exchange Biased La-Ca-Mn-O System
IEEE Transactions on Magnetics 49
(2013)
Lei Lu, Mingzhong Wu, Michael Mallary, Gerardo Bertero, Kumar Srinivasan, Ramamurthy Acharya, Helmut Schultheiß, Axel Hoffmann
Observation of microwave-assisted magnetization reversal in perpendicular recording media
Applied Physics Letters 103
(2013)
Vincent Vlaminck, Helmut Schultheiss, John E. Pearson, Frank Y. Fradin, Sam D. Bader, Axel Hoffmann
Erratum: “Mapping microwave field distributions via the spin Hall effect” [Appl. Phys. Lett. 101, 252406 (2012)]
Applied Physics Letters 102
(2013)
Karel Výborný, Goran Mihajlović, Axel Hoffmann, Sigurdur I Erlingsson
Magnetic field dependence of non-local lateral spin-valve signals beyond the Hanle effect
Journal of Physics: Condensed Matter 25
(2013)
L. D. Machado, C. G. Bezerra, M. A. Correa, C. Chesman, J. E. Pearson, A. Hoffmann
Static and dynamic properties of Fibonacci multilayers
Journal of Applied Physics 113
(2013)
Vincent Vlaminck, Helmut Schultheiss, John E. Pearson, Frank Y. Fradin, Sam D. Bader, Axel Hoffmann
Mapping microwave field distributions via the spin Hall effect
Applied Physics Letters 101
(2012)
H. Schultheiss, J. E. Pearson, S. D. Bader, A. Hoffmann
Thermoelectric Detection of Spin Waves
Physical Review Letters 109
(2012)
Yiyan Sun, Young-Yeal Song, Houchen Chang, Michael Kabatek, Michael Jantz, William Schneider, Mingzhong Wu, Helmut Schultheiss, Axel Hoffmann
Growth and ferromagnetic resonance properties of nanometer-thick yttrium iron garnet films
Applied Physics Letters 101
(2012)
K. Vogt, H. Schultheiss, S. Jain, J. E. Pearson, A. Hoffmann, S. D. Bader, B. Hillebrands
Spin waves turning a corner
Applied Physics Letters 101
(2012)
Axel Hoffmann, Pedro Prieto, Vitali Metlushko, Ivan K. Schuller
Superconducting Vortex Pinning with Magnetic Dots: Does Size and Magnetic Configuration Matter?
Journal of Superconductivity and Novel Magnetism 25
(2012)
L. D. Machado, C. G. Bezerra, M. A. Correa, C. Chesman, J. E. Pearson, A. Hoffmann
Anomalous magnetoresistance in Fibonacci multilayers
Physical Review B 85
(2012)
M. E. Gomez, A. Hoffmann, T. Gredig, A. Bill
Cali Conference “1st Centennial of Superconductivity: Trends in Nanoscale Superconductivity and Magnetism”
Journal of Superconductivity and Novel Magnetism 25
(2012)
Yaohua Liu, C. Visani, N. M. Nemes, M. R. Fitzsimmons, L. Y. Zhu, J. Tornos, M. Garcia-Hernandez, M. Zhernenkov, A. Hoffmann, C. Leon, J. Santamaria, S. G. E. te Velthuis
Effect of Interface-Induced Exchange Fields on Cuprate-Manganite Spin Switches
Physical Review Letters 108
(2012)
Zihui Wang, Yiyan Sun, Young-Yeal Song, Mingzhong Wu, Helmut Schultheiß, John E. Pearson, Axel Hoffmann
Electric control of magnetization relaxation in thin film magnetic insulators
Applied Physics Letters 99
(2011)
G. Mihajlović, S. I. Erlingsson, K. Výborný, J. E. Pearson, S. D. Bader, A. Hoffmann
Magnetic-field enhancement of nonlocal spin signal in Ni80 20
Physical Review B 84
(2011)
C. Visani, J. Tornos, N. M. Nemes, M. Rocci, C. Leon, J. Santamaria, S. G. E. te Velthuis, Yaohua Liu, A. Hoffmann, J. W. Freeland, M. Garcia-Hernandez, M. R. Fitzsimmons, B. J. Kirby, M. Varela, S. J. Pennycook
Symmetrical interfacial reconstruction and magnetism in La0.7 Ca 0.3 MnO 3 / YBa 2 Cu 3 O 7 / La 0.7 Ca 0.3 MnO 3
Physical Review B 84
(2011)
E. Jiménez, J. Camarero, P. Perna, N. Mikuszeit, F. J. Terán, J. Sort, J. Nogués, J. M. García-Martín, A. Hoffmann, B. Dieny, R. Miranda
Role of anisotropy configuration in exchange-biased systems
Journal of Applied Physics 109
(2011)
O. Mosendz, V. Vlaminck, J. E. Pearson, F. Y. Fradin, G. E. W. Bauer, S. D. Bader, A. Hoffmann
Detection and quantification of inverse spin Hall effect from spin pumping in permalloy/normal metal bilayers
Physical Review B 82
(2010)
Goran Mihajlović, Daniel K. Schreiber, Yuzi Liu, John E. Pearson, Samuel D. Bader, Amanda K. Petford-Long, Axel Hoffmann
Enhanced spin signals due to native oxide formation in Ni80Fe20/Ag lateral spin valves
Applied Physics Letters 97
(2010)
N. M. Nemes, C. Visani, C. Leon, M. Garcia-Hernandez, F. Simon, T. Fehér, S. G. E. te Velthuis, A. Hoffmann, J. Santamaria
Magnetic memory based on La0.7Ca0.3MnO3/YBa2Cu3O7/La0.7Ca0.3MnO3 ferromagnet/superconductor hybrid structures
Applied Physics Letters 97
(2010)
G. Mihajlović, J. E. Pearson, S. D. Bader, A. Hoffmann
Surface Spin Flip Probability of Mesoscopic Ag Wires
Physical Review Letters 104
(2010)
Hanqiao Zhang, Chaojiang Li, Ralu Divan, Axel Hoffmann, Pingshan Wang
Broadband Mag-Noise of Patterned Permalloy Thin Films
IEEE Transactions on Magnetics 46
(2010)
G. Mihajlović, M. S. Patrick, J. E. Pearson, V. Novosad, S. D. Bader, M. Field, G. J. Sullivan, A. Hoffmann
Temperature dependent nucleation and annihilation of individual magnetic vortices
Applied Physics Letters 96
(2010)
C. Visani, N. M. Nemes, M. Rocci, Z. Sefrioui, C. Leon, S. G. E. te Velthuis, A. Hoffmann, M. R. Fitzsimmons, F. Simon, T. Feher, M. Garcia-Hernandez, J. Santamaria
Directionally controlled superconductivity in ferromagnet/superconductor/ferromagnet trilayers with biaxial easy axes
Physical Review B 81
(2010)
O. Mosendz, J. E. Pearson, F. Y. Fradin, G. E. W. Bauer, S. D. Bader, A. Hoffmann
Quantifying Spin Hall Angles from Spin Pumping: Experiments and Theory
Physical Review Letters 104
(2010)
K. S. Buchanan, A. Hoffmann, V. Novosad, S. D. Bader
Erratum: “Translational-mode dynamics of exchange-biased vortices” [J. Appl. Phys. 103, 07B102 (2008)]
Journal of Applied Physics 107
(2010)
O. Mosendz, J. E. Pearson, F. Y. Fradin, S. D. Bader, A. Hoffmann
Suppression of spin-pumping by a MgO tunnel-barrier
Applied Physics Letters 96
(2010)
Hanqiao Zhang, Axel Hoffmann, Ralu Divan, Pingshan Wang
Direct-current effects on magnetization reversal properties of submicron-size Permalloy patterns for radio-frequency devices
Applied Physics Letters 95
(2009)
Hanqiao Zhang, Axel Hoffmann, Ralu Divan, Pingshan Wang
Direct Current Effects on High-Frequency Properties of Patterned Permalloy Thin Films
IEEE Transactions on Magnetics 45
(2009)
J. de la Venta, V. Bouzas, A. Pucci, M. A. Laguna-Marco, D. Haskel, S. G. E. te Velthuis, A. Hoffmann, J. Lal, M. Bleuel, G. Ruggeri, C. de Julián Fernández, M. A. García
X-ray Magnetic Circular Dichroism and Small Angle Neutron Scattering Studies of Thiol Capped Gold Nanoparticles
Journal of Nanoscience and Nanotechnology 9
(2009)
G. Mihajlović, J. E. Pearson, M. A. Garcia, S. D. Bader, A. Hoffmann
Negative Nonlocal Resistance in Mesoscopic Gold Hall Bars: Absence of the Giant Spin Hall Effect
Physical Review Letters 103
(2009)
G. Mihajlović, A. Hoffmann, S. von Molnár
Micro-Hall position sensing of magnetic nanowires
Journal of Applied Physics 106
(2009)
O. Mosendz, G. Mihajlović, J. E. Pearson, P. Fischer, M.-Y. Im, S. D. Bader, A. Hoffmann
Imaging of lateral spin valves with soft x-ray microscopy
Physical Review B 80
(2009)
E. Jiménez, J. Camarero, J. Sort, J. Nogués, A. Hoffmann, F. J. Teran, P. Perna, J. M. García-Martín, B. Dieny, R. Miranda
Highly asymmetric magnetic behavior in exchange biased systems induced by noncollinear field cooling
Applied Physics Letters 95
(2009)
A. Hoffmann, S. J. May, S. G. E. te Velthuis, S. Park, M. R. Fitzsimmons, G. Campillo, M. E. Gómez
Magnetic depth profile of a modulation-dopedLa 1 − x Ca x MnO 3
Physical Review B 80
(2009)
E. Jiménez, J. Camarero, J. Sort, J. Nogués, N. Mikuszeit, J. M. García-Martín, A. Hoffmann, B. Dieny, R. Miranda
Emergence of noncollinear anisotropies from interfacial magnetic frustration in exchange-bias systems
Physical Review B 80
(2009)
Pingshan Wang, Hanqiao Zhang, Ralu Divan, Axel Hoffmann
Tailoring High-Frequency Properties of Permalloy Films by Submicrometer Patterning
IEEE Transactions on Magnetics 45
(2009)
C. Visani, V. Peña, J. Garcia-Barriocanal, D. Arias, Z. Sefrioui, C. Leon, J. Santamaria, N. M. Nemes, M. Garcia-Hernandez, J. L. Martinez, S. G. E. te Velthuis, A. Hoffmann
Publisher's Note: Spin-dependent magnetoresistance of ferromagnet/superconductor/ferromagnetLa 0.7 Ca 0.3 MnO 3 ∕ YBa 2 Cu 3 O 7 − δ ∕ La 0.7 Ca 0.3 MnO 3
Physical Review B 75
(2007)
Axel Hoffmann, Seok‐Hwan Chung, Samuel D. Bader, Lee Makowski, Liaohai Chen
Brownian Motion in Biological Sensing
Biomedical Applications of Nanotechnology
(2007)
Konstantin Yu. Guslienko, Axel Hoffmann
Field Evolution of Tilted Vortex Cores in Exchange-Biased Ferromagnetic Dots
Physical Review Letters 97
(2006)
A. Hoffmann
The Origin for Training Effects in Exchange Bias Systems: Frustration and Multiple Anisotropy Axes at the Interface
INTERMAG 2006 - IEEE International Magnetics Conference
(2006)
A. Hoffmann, S. Chung, K. Guslienko, S. D. Bader, C. Liu, Q. Jin, A. Sutton, F. Yan, B. K. Kay, L. Makowski, L. Chen
Shaken Not Stirred: Magnetic Viruses for Biomagnetic Sensing
INTERMAG 2006 - IEEE International Magnetics Conference
(2006)
J. Sort, G. Salazar-Alvarez, M. D. Baró, B. Dieny, A. Hoffmann, V. Novosad, J. Nogués
Controlling magnetic vortices through exchange bias
Applied Physics Letters 88
(2006)
L. Geelhaar, M. Galluppi, G. Jaschke, R. Averbeck, H. Riechert, T. Remmele, M. Albrecht, M. Dworzak, R. Hildebrant, A. Hoffmann
Influence of structural nonuniformity and nonradiative processes on the luminescence efficiency of InGaAsN quantum wells
Applied Physics Letters 88
(2006)
Axel Hoffmann
Erratum: Symmetry Driven Irreversibilities at Ferromagnetic-Antiferromagnetic Interfaces [Phys. Rev. Lett.93, 097203 (2004)]
Physical Review Letters 95
(2005)
S. H. Chung, A. Hoffmann, S. D. Bader, C. Liu, B. Kay, L. Makowski, L. Chen
Biological sensors based on Brownian relaxation of magnetic nanoparticles
Applied Physics Letters 85
(2004)
C. Leighton, M. R. Fitzsimmons, P. Yashar, A. Hoffmann, J. Nogués, J. Dura, C. F. Majkrzak, Ivan K. Schuller
Two-Stage Magnetization Reversal in Exchange Biased Bilayers
Physical Review Letters 86
(2001)
J. I. Martín, M. Vélez, A. Hoffmann, Ivan K. Schuller, J. L. Vicent
Temperature dependence and mechanisms of vortex pinning by periodic arrays of Ni dots in Nb films
Physical Review B 62
(2000)