Bi-quadratic interlayer exchange coupling in Co 2MnSi/Ag/Co 2MnSi pseudo spin-valve

Hari S. Goripati, Masamitsu Hayashi*, T. Furubayashi, T. Taniguchi, H. Sukegawa, Y. K. Takahashi, K. Hono

*この研究の対応する著者

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Bi-quadratic interlayer exchange coupling is found below 100 K in a Co 2MnSi/Ag/Co 2MnSi current-perpendicular-to-plane pseudo spin valves. The bi-quadratic coupling constant J 2 was estimated to be ∼-0.30 erg/cm 2 at 5 K and the strong temperature dependence of the coupling strength points its likely origin to the loose spin model. Application of current of ∼2 × 10 7 A/cm 2 below 100 K leads to an increase in the magnetoresistance (MR), indicating current induced antiparallel alignment of the two magnetic layers. These results strongly suggest that the presence of the bi-quadratic interlayer exchange coupling causes the reduction of the magnetoresistance at low temperature and illustrates the importance of understanding the influence of interlayer exchange coupling on magnetization configuration in magnetic nanostructures.

本文言語English
論文番号123914
ジャーナルJournal of Applied Physics
110
12
DOI
出版ステータスPublished - 2011 12 15
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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