TY - JOUR
T1 - Photoemission and core-level magnetic circular dichroism studies of diluted magnetic semiconductors
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.
N1 - Funding Information:
This work was partially supported by a Grant-in-Aid for Scientific Research in Priority Area “Semiconductor Nan-spintronics” from the Ministry of Education, Culture, Sport, Science and Technology, Japan. The experiment at Photon Factory was done under Project No. 02S2-002 at the Institute of Materials Structure Science at KEK.
PY - 2005/6
Y1 - 2005/6
N2 - 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.
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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U2 - 10.1016/j.elspec.2005.01.212
DO - 10.1016/j.elspec.2005.01.212
M3 - Article
AN - SCOPUS:20244383149
VL - 144-147
SP - 701
EP - 705
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
SN - 0368-2048
ER -