Effect of annealing on interfacial spin polarization and resistance in permalloy/MgO/Ag lateral spin valves

Le Wang, Yasuhiro Fukuma, Hiroshi Idzuchi, Guanghua Yu, Yong Jiang, Yoshichika Otani

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We have investigated the effect of annealing on the nonlocal spin valve signal in lateral spin valves with permalloy/MgO/Ag junctions. The results show that annealing up to 400°C pushes up the spin polarization of the MgO interface to 38%, resulting in an increase in the nonlocal spin valve signal of up to 77.2mω. Further increase in the annealing temperature up to 500°C causes a decrease in the spin valve signal of 48.0mω. However, the high spin polarization of 55% could be advantageous for the enhancement of the spin accumulation in lateral spin valves.

Original languageEnglish
Article number093004
JournalApplied Physics Express
Volume4
Issue number9
DOIs
Publication statusPublished - 2011 Sep
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Effect of annealing on interfacial spin polarization and resistance in permalloy/MgO/Ag lateral spin valves'. Together they form a unique fingerprint.

Cite this