Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session A25: Topological/Skyrmion Hall Transport and Related Phenomena in Chiral Magnets
8:00 AM–11:00 AM,
Monday, March 5, 2018
LACC Room: 403B
Sponsoring Units: GMAG DCMP
Chair: Mohit Randeria, Ohio State University
Abstract: A25.00005 : Electric-Field-Driven Switching of Individual Magnetic Skyrmions*
10:24 AM–11:00 AM
Based on the discovery of nanoscale magnetic skyrmion lattices  as well as individual skyrmions  in ultrathin magnetic films and bilayers, stabilized by interfacial Dzyaloshinskii-Moriya interactions, applications of magnetic skyrmions for future spintronic devices, such as memory and logic elements, have become feasible . The properties of magnetic skyrmions can widely be tuned, e.g. by multiple interface engineering, leading to skyrmionic states in metallic multilayer systems being stable up to room temperature [4-6] and in zero magnetic field. Alternatively, chemical treatments, e.g. by oxidation or hydrogenation of ultrathin magnetic thin films can serve as a simple route towards tailored skyrmionic states.
By locally injecting spin-polarized electrons from an atomically sharp SP-STM tip, writing and deleting of individual skyrmions has been demonstrated, making use of spin-transfer torque exerted by the injected high-energy spin-polarized electrons . Alternatively, individual skyrmions can be created and deleted by local electric fields , which can be of great advantage in view of energy-efficient skyrmionic device concepts. The subsequent detection of the written skyrmions can also be achieved by electrical means rather than by using a magnetic sensing element . These results highlight the potential of current-driven skyrmions for future racetrack-type memory applications .
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*Financial support was provided by the European Union (Grant No. 665095, MAGicSky).
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