Electrical conductivity of the semiconducting phase in vanadium dioxide single crystals

被引:30
|
作者
Andreev, V. N. [1 ]
Klimov, V. A. [1 ]
机构
[1] Russian Acad Sci, AF Ioffe Physicotech Inst, R-194021 St Petersburg, Russia
关键词
D O I
10.1134/S1063783407120062
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The electrical conductivity of the semiconducting phase of vanadium dioxide single crystals is studied over a wide range of temperatures. It is shown that the electrical conductivity varies with temperature as log sigma similar to T in the range 340-170 K and as log sigma similar to 1/T at temperatures below 120 K. The experimental results are described in the framework of the model in which the temperature dependence of the hopping conductivity of L, small-radius polarons is determined by the dependence of the resonance integral on the amplitude of thermal lattice vibrations.
引用
收藏
页码:2251 / 2255
页数:5
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