THE ELECTRONIC-PROPERTIES OF LIQUID AG1-XSEX

被引:39
作者
OHNO, S
BARNES, AC
ENDERBY, JE
机构
[1] H.H. Wills Phys. Lab., Bristol Univ.
关键词
D O I
10.1088/0953-8984/6/28/010
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Measurements of the electrical conductivity sigma, thermoelectric power S and magnetic susceptibility of liquid Ag1-xSex alloys have been measured as a function of composition and temperature. The unusual maximum in sigma, along with the negative dsigma/dT observed around stoichiometry for Ag-S alloys is also observed in this system. The thermopower shows a p-n transition at x = 0.36 with a magnitude indicating that this is a liquid semiconductor with an essentially zero energy gap. It is demonstrated that the results cannot be explained using the Kubo-Greenwood expressions for sigma and S if rigid band behaviour is assumed. The origins of this unusual behaviour are discussed in terms of an enhanced carrier mobility near the stoichiometric composition.
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页码:5335 / 5350
页数:16
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