Non-collinear magnetic junction mediated by Rashba interaction

Wen Min Huang*, Cheng-Hung Chang, Hsiu Hau Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We study the non-collinear exchange coupling across the trilayer magnetic junction composed of an intermediate layer with Rashba interaction and two sandwiching ferromagnetic ones. To compute the mediated exchange coupling between the ferromagnetic layers, one needs to go beyond the single-particle argument and numerically integrates over contributions from the whole Fermi surface. We found interesting competition between the oscillatory Ruderman-Kittel-Kasuya-Yosida and the non-collinear spiral interactions. Surprisingly, the Fermi surface topology determines which type of magnetic interaction becomes dominant. Finally, we also discuss potential applications for the non-collinear exchange coupling across the junction.

Original languageEnglish
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 3
DOIs
StatePublished - 1 Mar 2007

Keywords

  • Magnetic junction
  • Rashba interaction
  • Spintronics

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