Optical Study of Electronic Structure and Nonmetal-Metal Transition of Gd_2S_3
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概要
- 論文の詳細を見る
Reflectivity spectra of a magnetic semiconductor material Gd_2S_3 (=Gd_<3-x>V_xS_4, where V denotes vacancy and x=1/3) have been measured in the energy range from 2 meV to 40 eV at 9, 20, 77 and 300 K. From the comparison between the optical conductivity and the photoelectron spectra, the energy position and the shape of the occupied and the unoccupied electronic states were obtained. Above 77 K, this material showed a metallic reflectivity spectrum, but an energy gap of about 7 meV opened on the Fermi level below 20 K. The origin of the nonmetal-metal transition was concluded to originate from the creation of a magnetic polaron state.
- 社団法人日本物理学会の論文
- 1993-12-15
著者
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Shin-ichi Kimura
Uvsor Facility Institute For Molecular Science
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SUZUKI Takashi
Department of Biochemistry, University of Shizuoka, School of Pharmaceutical Sciences, Core Research
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Kimura S
The Graduate School Of Science An Technology Kobe University
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Ikezawa Mikihiko
Research Institute for Scientific Measurements,Tokyo University
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ARAI Fumitaka
Research Institute for Scientific Measurements,Tohoku University
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Kimura Shin-ichi
Research Institute for Scientific Measurements, Tohoku University
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Kimura S
Graduate School Of Science And Technology Kobe University
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Kimura Shin-ichi
Division Of Mathematical And Material Science Graduate School Of Science And Technology
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Ikezawa M
Tohoku Univ. Sendai
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Ikezawa Mikihiko
Research Institute For Scientific Measurements Tokyo University
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Arai Fumitaka
Research Institute For Scientific Measurements Tohoku University
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Kimura Shojiro
Molecular Photoscience Research Center And Department Of Physics:(present Address)kyokugen Osaka Uni
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Ikezawa Mikihiko
Research Institute For Scientific Measurements Tohoku University
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Suzuki Takashi
Department Of Biochemistry University Of Shizuoka School Of Pharmaceutical Sciences:core Research Fo
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Suzuki Takashi
Department Of Anesthesia Showa University Northern Yokohama Hospital
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Suzuki Takashi
Department Of Anatomic Pathology Tohoku University School Of Medicine
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