Spin-orbit torque switching in low-damping magnetic insulators: A micrmomagnetic study

Wei Heng Hsu, R. H. Victora

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Magnetic insulators, in particular, rare-earth iron garnets, have low damping compared to metallic ferromagnetic materials due to lack of conduction electrons. In analogy to spin-transfer-torque devices, the low-damping nature is presumed to be an advantage for spintronic applications. We report that perpendicular magnetic anisotropy material with low damping actually does not favor reliable spin-orbit torque (SOT) switching. Increasing damping, introducing interfacial Dzyaloshinskii-Moriya interactions, or field-like torques may help SOT switching in some cases. Having notches in a nanometer-scale element, which is a more realistic size for practical applications, can also improve switching stability.

Original languageEnglish (US)
Article number9040531
JournalIEEE Magnetics Letters
Volume11
DOIs
StatePublished - 2020

Bibliographical note

Publisher Copyright:
© 2010-2012 IEEE.

Keywords

  • Spin electronics
  • magnetic insulators
  • micromagnetic simulation
  • spin-orbit torque

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