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Generation, manipulation, and device applications of room-temperature skyrmion

Title: Generation, manipulation, and device applications of room-temperature skyrmion

Speaker:  Prof. Yu Guoqiang

Institute of Physics, CAS

Time:  2019.07.02  10:00 AM

Location:  Room 437,  Xingjian Building

Host:School of Physics Science & Technology

Dr. Guoqiang Yu received B.S. degree in physics from Jilin University, Changchun, China, in 2007 and the Ph.D. degree in condensed state physics from Institute of Physics, Chinese Academy of Science, Beijing, China, in 2012. In 2012, he joined the University of California, Los Angeles, CA, as a postdoctoral researcher. In October 2017, he joined in Institute of Physics, Chinese Academy of Science as an associate professor. His major research interests are spin-orbit coupling-related spin-orbit torque effect and magnetic skyrmion in room-temperature magnetic multilayers. To date, he has published over 70 papers in many research journals, including Science, Nature Nanotechnology, Nature Materials, Nature Physics, Nature Electronics, Nature Communications, Physical Review Letters, Advanced Materials, Nano Letters. The citation is over 3000 times。

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In this talk, Prof Yu introduced the new development of magnetic skyrmion in magnetic thin films. Magnetic skyrmions are swirling topological spin textures, which may be promising for future spintronic applications. Room-temperature skyrmions in ferromagnetic thin films, which are stabilized by interfacial Dzyaloshinskii-Moriya interaction (DMI), are of particular importance for practical applications in memory and data storage devices, due to their compatibility with existing manufacturing techniques. The presenter will talk about his recent progress on the study of room-temperature skyrmions and also discuss the problems for skyrmion devices.

Reference:

G. Q. Yu et al., Nano Letters, 16, 1981 (2016)
G. Q. Yu, et al., Nano Letters, 17, 261 (2017)
G. Q. Yu, et al., Nano Letters 18,980 (2018)
W. J. Li & G. Q. Yu et al., Advanced Materials 1807683 (2019)