Webinar

A URL for the Zoom Webinar will be emailed to registered attendees
24 hours and 2 hours before the event and at the time of the event.

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Abstract:

This webinar begins with a basic introduction of the physical origin of Spin Orbit Torque (SOT), followed by the related symmetry analysis of a magnetic thin film in a sandwiched structure for the generation of a net SOT effect. It will introduce a new method to generate bulk-like SOT —a composition gradient along the thin-film normal for breaking the inversion symmetry— which enables a thicker magnetic layer with high magnetic anisotropy. An overview of the methods commonly used to break mirror and rotational symmetries to realize all-electric switching of perpendicular magnetization will follow along with a detailed discussion on methods for the realization of all-electric switching of perpendicular magnetization: the use of a spin source layer with low magnetic symmetry and low crystal symmetry, which generates an out-of-plane SOT; interfacial 3m1 symmetry, which induces a new “3m” spin torque; precise control of the tilting of magnetocrystalline anisotropy easy axis; and a spin-current gradient along the current direction.

More details here

Speaker:

Professor Jingsheng Chen, PhD., is currently an Associate Professor with the Department of Materials Science and Engineering, National University of Singapore. Since 2008, he has been sponsored by Seagate Technology to develop high-anisotropy magnetic recording media for heat-assisted magnetic recording. He has authored or coauthored over 300 refereed journal articles, holds more than ten patents, and has made over 50 invited presentations at international conferences. His current research interests include magnetic materials and devices for spintronics application, high-anisotropy magnetic materials for hard disk drives, multiferroic materials, and emerging ferroelectric materials and devices.  He is an IEEE 2022 Distinguished Lecturer