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

doi:10.1016/j.jmmm.2003.12.803

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

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	e1553-e1555
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.803
Publication status	Published - 2004 May 1
Externally published	Yes

Keywords

X-ray absorption spectroscopy
X-ray magnetic circular dichroism
Zinc-blende MnAs dots

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Density dependence of zinc-blende MnAs dots studied by X-ray absorption spectroscopy and X-ray magnetic circular dichroism. / Okabayashi, J.; Mizuguchi, M.; Ono, K.; Oshima, M.; Fujimori, A.; Yuri, M.; Chen, C. T.; Akinaga, H.

In: Journal of Magnetism and Magnetic Materials, Vol. 272-276, No. SUPPL. 1, 01.05.2004, p. e1553-e1555.

Research output: Contribution to journal › Article › peer-review

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abstract = "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.",

keywords = "X-ray absorption spectroscopy, X-ray magnetic circular dichroism, Zinc-blende MnAs dots",

author = "J. Okabayashi and M. Mizuguchi and K. Ono and M. Oshima and A. Fujimori and M. Yuri and Chen, {C. T.} and H. Akinaga",

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T1 - Density dependence of zinc-blende MnAs dots studied by X-ray absorption spectroscopy and X-ray magnetic circular dichroism

AU - Okabayashi, J.

AU - Mizuguchi, M.

AU - Ono, K.

AU - Oshima, M.

AU - Fujimori, A.

AU - Yuri, M.

AU - Chen, C. T.

AU - Akinaga, H.

PY - 2004/5/1

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N2 - 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.

AB - 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.

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