Photoemission and core-level magnetic circular dichroism studies of diluted magnetic semiconductors

A. Fujimori; J. Okabayashi; Y. Takeda; T. Mizokawa; J. Okamoto; K. Mamiya; Y. Saitoh; Y. Muramatsu; M. Oshima; S. Ohya; M. Tanaka

doi:10.1016/j.elspec.2005.01.212

Photoemission and core-level magnetic circular dichroism studies of diluted magnetic semiconductors

A. Fujimori, J. Okabayashi, Y. Takeda, T. Mizokawa, J. Okamoto, K. Mamiya, Y. Saitoh, Y. Muramatsu, M. Oshima, S. Ohya, M. Tanaka

Research output: Contribution to journal › Article

5 Citations (Scopus)

Abstract

An overview is given on the photoemission studies of the electronic structure of diluted magnetic semiconductors (DMS's), in particular of the prototypical ferromagnetic DMS Ga_1-xMn_xAs. Configuration-interaction cluster-model analyses of the photoemission data allow us to estimate the p-d exchange coupling constant and hence to predict how to increase the Curie temperature in new materials. Spectra near the Fermi level combined with the transport and optical properties suggest a highly incoherent metallic state for the ferromagnetic metallic phase. It is shown that new insight into the chemically and magnetically inhomogeneous states of DMS's can be gained by the temperature and magnetic field dependence of core-level magnetic circular dichroism signals.

Original language	English
Pages (from-to)	701-705
Number of pages	5
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	144-147
DOIs	https://doi.org/10.1016/j.elspec.2005.01.212
Publication status	Published - 2005 Jun 1
Externally published	Yes

Keywords

Diluted magnetic semiconductors
Magnetic circular dichroism
Photoemission

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

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Fujimori, A., Okabayashi, J., Takeda, Y., Mizokawa, T., Okamoto, J., Mamiya, K., Saitoh, Y., Muramatsu, Y., Oshima, M., Ohya, S., & Tanaka, M. (2005). Photoemission and core-level magnetic circular dichroism studies of diluted magnetic semiconductors. Journal of Electron Spectroscopy and Related Phenomena, 144-147, 701-705. https://doi.org/10.1016/j.elspec.2005.01.212

Photoemission and core-level magnetic circular dichroism studies of diluted magnetic semiconductors. / Fujimori, A.; Okabayashi, J.; Takeda, Y.; Mizokawa, T.; Okamoto, J.; Mamiya, K.; Saitoh, Y.; Muramatsu, Y.; Oshima, M.; Ohya, S.; Tanaka, M.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 144-147, 01.06.2005, p. 701-705.

Research output: Contribution to journal › Article

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abstract = "An overview is given on the photoemission studies of the electronic structure of diluted magnetic semiconductors (DMS's), in particular of the prototypical ferromagnetic DMS Ga1-xMnxAs. Configuration-interaction cluster-model analyses of the photoemission data allow us to estimate the p-d exchange coupling constant and hence to predict how to increase the Curie temperature in new materials. Spectra near the Fermi level combined with the transport and optical properties suggest a highly incoherent metallic state for the ferromagnetic metallic phase. It is shown that new insight into the chemically and magnetically inhomogeneous states of DMS's can be gained by the temperature and magnetic field dependence of core-level magnetic circular dichroism signals.",

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AU - Fujimori, A.

AU - Okabayashi, J.

AU - Takeda, Y.

AU - Mizokawa, T.

AU - Okamoto, J.

AU - Mamiya, K.

AU - Saitoh, Y.

AU - Muramatsu, Y.

AU - Oshima, M.

AU - Ohya, S.

AU - Tanaka, M.

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AB - An overview is given on the photoemission studies of the electronic structure of diluted magnetic semiconductors (DMS's), in particular of the prototypical ferromagnetic DMS Ga1-xMnxAs. Configuration-interaction cluster-model analyses of the photoemission data allow us to estimate the p-d exchange coupling constant and hence to predict how to increase the Curie temperature in new materials. Spectra near the Fermi level combined with the transport and optical properties suggest a highly incoherent metallic state for the ferromagnetic metallic phase. It is shown that new insight into the chemically and magnetically inhomogeneous states of DMS's can be gained by the temperature and magnetic field dependence of core-level magnetic circular dichroism signals.

KW - Diluted magnetic semiconductors

KW - Magnetic circular dichroism

KW - Photoemission

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