Enhanced spin signals due to native oxide formation in Ni80 Fe20 /Ag lateral spin valves

Goran Mihajlović, Daniel K. Schreiber, Yuzi Liu, John E. Pearson, Samuel D. Bader, Amanda K. Petford-Long, Axel Hoffmann

Research output: Contribution to journalArticlepeer-review

Abstract

Large nonlocal spin valve signals are reported in mesoscopic Ni80 Fe20 /Ag lateral spin valves upon exposing them to air. Magnetotransport measurements combined with transmission electron microscopy show that the formation of a native oxide layer at the Ni80 Fe20 /Ag interface is responsible for the large signals. The results indicate that lateral spin valves with superior performance to those based on high-resistance tunnel barriers can be achieved via controllable growth of native permalloy oxides.

Original languageEnglish (US)
Article number112502
JournalApplied Physics Letters
Volume97
Issue number11
DOIs
StatePublished - Sep 13 2010
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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