Density dependence of zinc-blende MnAs dots studied by X-ray absorption spectroscopy and X-ray magnetic circular dichroism

J. Okabayashi, M. Mizuguchi, K. Ono, M. Oshima, A. Fujimori, M. Yuri, C. T. Chen, H. Akinaga

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Zinc-blende type nanoscale MnAs dots were grown on a sulfur-passivated GaAs (001) surface by molecular beam epitaxy. We report on the dot density dependence of the X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) in the Mn 2p core-level region. The XAS spectrum of low-density MnAs dots showed "localized" behavior as in the case of (Ga,Mn)As, while the spectrum of high-density MnAs dots changed to metallic behavior. The magnetic-field dependence of the XMCD revealed ferromagnetic behavior in the case of high-density MnAs dots.

本文言語English
ページ(範囲)e1553-e1555
ジャーナルJournal of Magnetism and Magnetic Materials
272-276
SUPPL. 1
DOI
出版ステータスPublished - 2004 5 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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