Core Absorption Spectra of Crystalline and Amorphous GeTe Thin Films
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概要
- 論文の詳細を見る
Core absorption spectra of crystalline (c-) and amorphous (?-) GeTe thin films havebeen measured in the 26-70 eV region. Photoet'nission spectra have also beenmeasured to determine the binding energies of Ge 3d and Te 44 core levels. In the cphase Ge 3d absorption shows excitonic peaks which can be explained in atomic piclure, while Te 44 absorption shows broad structures which reflect DOS of the conduction band. A small peak was found below the broad structures of Te 4d absorption,the origin of which is the excitonic transition or the transition to the hole statesgenerated by Ge vacancies located near the top of the valence b;tnd. In the *-phase Ge3d absorption shows a broad structure while Te 4d absorption somewhat sharpdoublet. The difference in the spectral features in both phases suggests that the bon-ding character is more covalent in a-GeTe than in c-GeTe.[GeTe, amorphous, core exciton, Ge 3d level, Te 4d level, covalency, degenerate ll semiconductor, band structttrel
- 社団法人日本物理学会の論文
- 1990-11-15
著者
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Saito T
Plasma Research Center University Of Tsukuba
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KONDO Shin-ichi
Department of Chemistry, Faculty of Science and Engineering, Ritsumeikan University
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Saito T
Univ. Tsukuba Ibaraki
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Fukui Ken-ichi
Department Of Chemistry Graduate Of Science The University Of Tokyo
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Kondo S
Ntt Opto‐electronics Lab. Atsugi‐shi Jpn
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Kondo S
Institute For Chemical Research Kyoto University
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Kondo Shin-ichi
Research Center For Development Of Far-infrared Region Fukui University
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Kondo Shin-ichi
Department Of Applied Physics Faculty Of Engineering Fukui University
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FUJII Yasuo
Department of Applied Physics,Faculty of Engineering,Osaka City University
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SAKISAKA Yasuo
Department of Chemistry,Faculty of Science,Kyoto University
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Kondo S
Hitachi Ltd. Tokyo Jpn
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Kondo S
Department Of Materials Science And Engineering Nagasaki University
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SAITO Tadaaki
Department of Applied Physics,Faculty of Engineering,Fukui University
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FUKUI Kazutoshi
Ultraviolet Synchrotron Orbital Radiation Facility (UVSOR),Institute for Molecular Science
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WATANABE Makoto
Ultraviolet Synchrotron Orbital Radiation Facility (UVSOR),Institute for Molecular Science
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Ken-ichi Fukui
Department Of Chemistry Graduate School Of Science The University Of Tokyo
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Saito Tadaaki
Department Of Applied Physics Faculty Of Engineering Fukui University
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Sakisaka Y
Department Of Chemistry Faculty Of Science Kyoto University
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Sakisaka Yasuo
Department Of Chemistry Kyoto University
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Fujii Yasuo
Department Of Applied Physics Faculty Of Engineering Osaka City University
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