Optical Absorption in Degenerately Doped Semiconductors: Mott Transition or Mahan Excitons?
نویسندگان
چکیده
منابع مشابه
Optical absorption in degenerately doped semiconductors: Mott transition or Mahan excitons?
Electron doping turns semiconductors conductive even when they have wide fundamental band gaps. The degenerate electron gas in the lowest conduction-band states, e.g., of a transparent conducting oxide, drastically modifies the Coulomb interaction between the electrons and, hence, the optical properties close to the absorption edge. We describe these effects by developing an ab initio technique...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2011
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.107.236405