Temperature Dependence of A.C. Conductivity in Glassy As_<40>Se_<60>Ag_x
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概要
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A.c. conductivity of glassy As..Se..Ag. (,X'=0 -0.5) was rneasured at tem-peratures from 77 K to 400 K in the frequency range from 30 Hz to 5 MHz.Below l MHz, the a.c. conduc1.ivity o..(co) is proportional to ctc'. In As.Se.sample (,X"=0), the value of o..(co) depends linearly on the frequency and is nearlyindependent of temperature. In the samples containing silvet", a..(a) increaseswith silver content, especially at high temperatures and low I'requencies. Valueof the exponent s is about 1.0 at 80 K, and decreases to 0.5 at 350 K. Temperaturedependence of a..(a) and s in both samples is reasonably interpreted by the cor-related barrier hopping model. hJumerica1 calculations in the cases of bipolaronsand sinule-r>olarons auree well with the exrerimental results on the sampleswithout silver and those containing silver, respectively.
- 社団法人日本物理学会の論文
- 1983-04-15
著者
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Yamada Shoji
Research Institute Of Electronics Shizuoka University
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Kitao Michihiko
Research Institute Of Electronics Shizuoka University
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Hirata Kazuto
Graduate School Of Electronic Science And Technology Shizuoka University
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