Numerical study of spin relaxation by thermal fluctuation: Effect of shape anisotropy

Kyoung Jin Lee, N. Y. Park, T. D. Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Effects of the shape anisotropy on the thermally activated spin relaxation have been investigated using the stochastic Landau-Lifshitz-Gilbert equation. The relaxation times of a noninteracting particle and a thin film were compared with each other. In a noninteracting particle, the relaxation time largely increased with the shape anisotropy when the damping constant was smaller than a certain critical value. In this study, the critical damping constant was 0.02. However, the effect of the shape anisotropy on the energy barrier was negligible in a thin film. All of these results can be explained from the effect of magnetostatic interaction that is enhanced by precession motion at low damping constant.

Original languageEnglish
Pages (from-to)7460-7462
Number of pages3
JournalJournal of Applied Physics
Volume89
Issue number11 II
DOIs
Publication statusPublished - 2001 Jun 1
Externally publishedYes

Fingerprint

damping
anisotropy
relaxation time
magnetostatics
thin films
precession
interactions
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Numerical study of spin relaxation by thermal fluctuation : Effect of shape anisotropy. / Lee, Kyoung Jin; Park, N. Y.; Lee, T. D.

In: Journal of Applied Physics, Vol. 89, No. 11 II, 01.06.2001, p. 7460-7462.

Research output: Contribution to journalArticle

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