Efficient spin injection into nonmagnetic metals through low-resistance MgO

L. Wang, Y. Fukuma, H. Idzuchi, Y. Otani

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effect of interface on the spin injection characteristics in lateral spin valves with Permalloy/MgO/Ag junctions has been studied. The spin valve signal drastically increases after the insertion of a thin MgO layer in the local and nonlocal spin injection schemes. We analyze our results based on the spin-dependent diffusion equation. This reveals that the interface resistance of ∼100 fm2 could effectively overcome the spin resistance mismatch between ferromagnetic and nonmagnetic metals.

Original languageEnglish
Article number07C506
JournalJournal of Applied Physics
Volume109
Issue number7
DOIs
Publication statusPublished - 2011 Apr 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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