Critical switching current density induced by spin Hall effect in magnetic structures with first-and second-order perpendicular magnetic anisotropy

Seok Jin Yun, Kyung Jin Lee, Sang Ho Lim

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

In this study, we derive analytical expressions for the critical switching current density induced by spin Hall effect in magnetic structures with the first-and second-order perpendicular magnetic anisotropy. We confirm the validity of the expressions by comparing the analytical results with those obtained from a macrospin simulation. Moreover, we find that for a particular thermal stability parameter, the switching current density can be minimized for a slightly positive second-order perpendicular magnetic anisotropy and the minimum switching current density can further be tuned using an external magnetic field. The analytical expressions are of considerable value in designing high-density magnetic random access memory and cryogenic memory.

Original languageEnglish
Article number15314
JournalScientific reports
Volume7
Issue number1
DOIs
Publication statusPublished - 2017 Dec 1

Bibliographical note

Funding Information:
This research was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (No. 2015M3D1A1070465).

Publisher Copyright:
© 2017 The Author(s).

ASJC Scopus subject areas

  • General

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