Far-Infrared Observation of D^- Band in n-Type Germanium
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概要
- 論文の詳細を見る
Far-Infrared absorption spectra of As- or Sb-doped germanium have been in-vestigated at 1.5 -20 K. Spectral shape and its concentration dependence in Ge(As)show good agreement with the theoretical calculation based on a D band model. Twotypes of thermally induced absorption are found in Ge(Sb). The first one shows anexponential dependence upon reciprocal absolute temperature and is ascribed to freecarrier absorptions. The second one shows a different temperature dependence and isfound to vanish under [1 1 l] uniaxial stress. These results give a direct evidence of theparticipation of a D band in the optical transitions. An absorption peak ascribed tothe transition from D.,D., to D"D in donor pairs is also found in the spectra ofGe(As) and Ge(Sb).
- 社団法人日本物理学会の論文
- 1982-03-15
著者
-
Narita Shin-ichiro
Department Of Material Physics
-
Sawada Shigeki
Department Of Material Physics Faculty Of Engineering Science Osaka University
-
Kobayashi Michihiro
Department Of Agricultural Chemistry Faculty Of Agriculture Kyoto University
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