Magnetic structures and half-metallicity at zincblende ferromagnetic/antiferromagnetic interfaces: Role of tetragonal distortions

Kohji Nakamura, Toru Akiyama, Tomonori Ito, A. J. Freeman

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In our search for half-metallic exchange bias interfaces, we determined magnetic structures at ferromagnetic (FM)/antiferromagnetic (AFM) interfaces in zincblende transition-metal chalcogenides, CrSe/MnSe and CrTe/MnTe, by means of the first principles full-potential linearized augmented plane-wave method, including the effect of a tetragonal distortion that may be induced in epitaxial growth. The tetragonal distortion with c / a < 1 in both MnSe and MnTe is found to prefer the uncompensated AFM interface while that with c / a > 1, the compensated AFM interface. With the uncompensated AFM interface, an antiparallel alignment of the Cr and Mn moments induces an excellent half-metallicity at the interface even when the tetragonal distortion is included.

Original languageEnglish
Pages (from-to)2186-2188
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 3
DOIs
Publication statusPublished - Mar 1 2007

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Keywords

  • Exchange bias
  • Half-metal
  • Transition-metal chalcogenide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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