Spin current and spin Hall effect in metallic nano-structures

Y. Otani, Takashi Kimura

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Laterally configured ferromagnetic/nonmagnetic multiterminal structures have great potential for developing future spintronic devices. We demonstrate two kinds of novel spintronic devices. One is a lateral spin valve with noncollinear dual spin injectors by which the direction of the spin accumulation in a nonmagnetic metal can be changed by varying the currents injected by two spin injectors. The other is a transformer between spin and charge currents using the spin Hall effect. A large spin Hall conductivity of 260 S/cm at room temperature, which is 104 times larger than that in semiconductor systems, is found in the Pt wire. We also demonstrate the reciprocal relation between the spin and charge currents. Temperature dependence of the spin Hall conductivity is also discussed.

Original languageEnglish
Article number4544927
Pages (from-to)1911-1915
Number of pages5
JournalIEEE Transactions on Magnetics
Volume44
Issue number7
DOIs
Publication statusPublished - Jul 1 2008
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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