Dr. Xichao Zhang is an Assistant Professor at Waseda University. He is a member of Prof. Masahito Mochizuki’s Theoretical Group. He received his Ph.D. from Shinshu University in 2018, and worked as a JSPS Postdoctoral Fellow at Shinshu University (2020-2022). He also worked at the Chinese University of Hong Kong, Shenzhen (2016-2020) and the University of Hong Kong (2014-2016).
Dr. Zhang’s research interests encompass magnetism, spintronics, and nanoscience, with a focus on the theoretical and computational study of spin textures, spin dynamics, and spintronic devices. He has spent more than ten years exploring different species of topological spin textures, including skyrmions, skyrmioniums, bimerons, and bimeroniums. Some specific systems that Dr. Zhang works on include bulk chiral magnets, thin films with interfacial chiral interactions, synthetic antiferromagnetic and ferrimagnetic multilayers, and low-dimensional frustrated spin systems. He has also been investigating functional applications for several years, such as logic computing gates that utilize spin textures as information carriers. Recently, Dr. Zhang’s research particularly focuses on the complex dynamics of particle-like spin textures interacting with artificially nanostructured surfaces and interfaces. In addition, he works on interdisciplinary topics that bridge magnetism and spintronics with biological physics, soft matter, and fluid science. Examples include the flow phenomena of particle-like spin textures and the active matter behaviors in magnetic systems.
Dr. Zhang has published more than 40 first and co-first author papers in peer-reviewed academic journals, including Nature Physics, Nature Electronics, Nature Communications, Physical Review Letters, Nano Letters, and Applied Physics Letters. He has also coauthored over 80 peer-reviewed academic papers through international collaborations with leading universities and industry organizations. Besides, he has contributed five invited chapters to three academic books published by Taylor & Francis Group, Elsevier, and Springer. Dr. Zhang’s research contributions have earned him widespread recognition in the scientific community. His Google Scholar citations are over 11,000 with an h-index of 46. He has been ranked among the World’s Top 2% Scientists by Stanford University since 2020. In 2024, Dr. Zhang was elected as an IEEE Senior Member. In 2025, Dr. Zhang received the prestigious Waseda Research Award (High-Impact Publication Category, AY2024).
>>>SELECTED PUBLICATIONS<<<
[01] “Skyrmion Dynamics in a Frustrated Ferromagnetic Film and Current-Induced Helicity Locking-Unlocking Transition”,
X. Zhang, J. Xia, Y. Zhou, X. Liu, H. Zhang, and M. Ezawa,
Nature Communications 8, 1717 (2017).
DOI: 10.1038/s41467-017-01785-w
[02] “Magnetic Bilayer-Skyrmions without Skyrmion Hall Effect”,
X. Zhang, Y. Zhou, and M. Ezawa,
Nature Communications 7, 10293 (2016).
DOI: 10.1038/ncomms10293
[03] “Configurable Pixelated Skyrmions on Nanoscale Magnetic Grids”,
X. Zhang, J. Xia, K. Shirai, H. Fujiwara, O. A. Tretiakov, M. Ezawa, Y. Zhou, and X. Liu,
Communications Physics 4, 255 (2021).
DOI: 10.1038/s42005-021-00761-7
[04] “Magnetic Skyrmion Logic Gates: Conversion, Duplication and Merging of Skyrmions”,
X. Zhang, M. Ezawa, and Y. Zhou,
Scientific Reports 5, 9400 (2015).
DOI: 10.1038/srep09400
[05] “Laminar and Transiently Disordered Dynamics of Magnetic-Skyrmion Pipe Flow”,
X. Zhang, J. Xia, O. A. Tretiakov, M. Ezawa, G. Zhao, Y. Zhou, X. Liu, and M. Mochizuki,
Physical Review B 108, 144428 (2023).
DOI: 10.1103/PhysRevB.108.144428
[06] “Static and Dynamic Properties of Bimerons in a Frustrated Ferromagnetic Monolayer”,
X. Zhang, J. Xia, L. Shen, M. Ezawa, O. A. Tretiakov, G. Zhao, X. Liu, and Y. Zhou,
Physical Review B 101, 144435 (2020).
DOI: 10.1103/PhysRevB.101.144435
[07] “Control and Manipulation of a Magnetic Skyrmionium in Nanostructures”,
X. Zhang, J. Xia, Y. Zhou, D. Wang, X. Liu, W. Zhao, and M. Ezawa,
Physical Review B 94, 094420 (2016).
DOI: 10.1103/PhysRevB.94.094420
[08] “Chiral Skyrmions Interacting with Chiral Flowers”,
X. Zhang, J. Xia, O. A. Tretiakov, M. Ezawa, G. Zhao, Y. Zhou, X. Liu, and M. Mochizuki,
Nano Letters 23, 11793 (2023).
DOI: 10.1021/acs.nanolett.3c03792
[09] “A Frustrated Bimeronium: Static Structure and Dynamics”,
X. Zhang, J. Xia, M. Ezawa, O. A. Tretiakov, H. T. Diep, G. Zhao, X. Liu, and Y. Zhou,
Applied Physics Letters 118, 052411 (2021).
DOI: 10.1063/5.0034396
[10] “Direct Observation of the Skyrmion Hall Effect”,
W. Jiang, X. Zhang, G. Yu, W. Zhang, X. Wang, M. B. Jungfleisch, J. E. Pearson, X. Cheng, O. Heinonen, K. L. Wang, Y. Zhou, A. Hoffmann, and S. G. E. te Velthuis,
Nature Physics 13, 162 (2017).
DOI: 10.1038/nphys3883
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