Effect of spin memory loss on spin transfer torque

Seo Won Lee, Kyoung Jin Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We investigate how the spin memory loss at interfaces affects the spin transfer torque in the framework of the drift-diffusion model. The spin memory loss changes the spin accumulation in the non-magnetic spacer separating the two ferromagnets in a spin valve structure and, thus, the spin transfer torque. By comparing theoretical values of the spin transfer torque with experimental results, we found that non-zero spin memory loss is essential to explain the experimental switching current densities in the current-induced magnetization switching. The spin memory loss determined by the comparison is in good agreement with the value determined by experimental measurement of giant magnetoresistance.

Original languageEnglish
Pages (from-to)1501-1508
Number of pages8
JournalJournal of the Korean Physical Society
Volume55
Issue number4
DOIs
Publication statusPublished - 2009 Oct 1

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torque
spacers
current density
magnetization

Keywords

  • Current-induced magnetization switching
  • Diffusive transport
  • Spin transfer torque

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Effect of spin memory loss on spin transfer torque. / Lee, Seo Won; Lee, Kyoung Jin.

In: Journal of the Korean Physical Society, Vol. 55, No. 4, 01.10.2009, p. 1501-1508.

Research output: Contribution to journalArticle

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AB - We investigate how the spin memory loss at interfaces affects the spin transfer torque in the framework of the drift-diffusion model. The spin memory loss changes the spin accumulation in the non-magnetic spacer separating the two ferromagnets in a spin valve structure and, thus, the spin transfer torque. By comparing theoretical values of the spin transfer torque with experimental results, we found that non-zero spin memory loss is essential to explain the experimental switching current densities in the current-induced magnetization switching. The spin memory loss determined by the comparison is in good agreement with the value determined by experimental measurement of giant magnetoresistance.

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