Properties of (Ga,Mn)As/(Al,Ga)As/(Ga,Mn)As magnetic trilayer structures

D. Chiba, N. Akiba, F. Matsukura, Y. Ohno, H. Ohno

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Magnetoresistance effect due to the spin-dependent scattering and the spin-polarized tunneling as well as the interlayer coupling in (Ga,Mn)As/(Al,Ga)As/(Ga,Mn)As semiconductor-based magnetic trilayer structures were studied. Both current-in-plane resistance and current-perpendicular-to-plane tunneling resistances are shown to depend on the relative magnetization directions of the two ferromagnetic (Ga,Mn)As layers. The interlayer coupling between the two (Ga,Mn)As layers is always ferromagnetic and the magnitude is weak (<0.5 μJ/m2).

Original languageEnglish
Pages (from-to)278-282
Number of pages5
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume10
Issue number1-3
DOIs
Publication statusPublished - 2001 May 1

Keywords

  • Interlayer coupling
  • Magnetic semiconductor
  • Spin-dependent scattering
  • Tunneling magnetoresistance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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