Signs of anisotropic magnetoresistance in Co2MnGa Heusler alloy epitaxial thin films based on current direction

Takashi Sato, Satoshi Kokado, Masahito Tsujikawa, Tomoyuki Ogawa, Satoru Kosaka, Masafumi Shirai, Masakiyo Tsunoda

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Anisotropic magnetoresistance (AMR) effects in Cox(Mn0.44Ga0.56)100-x epitaxial thin films were investigated in the temperature range of 5-300 K by changing the current (I) direction to the crystal axis and the Co content (x). The AMR ratios were mostly positive for I // Co2MnGa[100] and negative for I // Co2MnGa[110] and showed peak values at x = 49.7 at% for both current directions. AMR ratios calculated from s-d scattering theory, including crystal field effects with density of states information from first-principles calculations, well reproduced experimental features.

Original languageEnglish
Article number103005
JournalApplied Physics Express
Volume12
Issue number10
DOIs
Publication statusPublished - 2019 Oct 1

ASJC Scopus subject areas

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

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