ELECTRICAL-PROPERTIES OF AN UNUSUAL LIQUID SEMICONDUCTOR - K-TE

被引:11
作者
FORTNER, J [1 ]
SABOUNGI, ML [1 ]
ENDERBY, JE [1 ]
机构
[1] UNIV BRISTOL,HH WILLS PHYS LAB,BRISTOL BS8 1TL,AVON,ENGLAND
关键词
D O I
10.1080/09500839308240498
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Thermopower and electrical conductivity measurements are reported for liquid KxTe1-x alloys. The results confirm a semiconducting behaviour of the liquid over a large range of compositions and temperatures, which is due to the presence of low-coordination structural units as confirmed by recent diffraction studies. Further insights into the controversial issue of Te bonding in the liquid state are inferred. The Kubo-Greenwood formalism is discussed to explain the observed electrical conductivity and thermopower. The temperature dependence of the conductivity is shown to obey the Meyer-Neldel (MN) rule. The data are not consistent with an explanation of the MN rule based on a statistical shift of the Fermi energy with temperature.
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页码:85 / 91
页数:7
相关论文
共 17 条
[1]   THE STRUCTURAL AND ELECTRICAL-PROPERTIES OF LIQUID COPPER SELENIDE [J].
BARNES, AC ;
ENDERBY, JE .
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1988, 58 (05) :497-512
[2]   LIQUID SEMICONDUCTORS [J].
ENDERBY, JE ;
BARNES, AC .
REPORTS ON PROGRESS IN PHYSICS, 1990, 53 (02) :85-179
[3]   RAMAN-SCATTERING IN LIQUID K-TE [J].
FORTNER, J ;
SABOUNGI, ML .
EUROPHYSICS LETTERS, 1993, 22 (05) :359-364
[4]   CHARGE-TRANSFER IN LIQUID SEMICONDUCTORS - THE K-TE SYSTEM [J].
FORTNER, J ;
SABOUNGI, ML ;
ENDERBY, JE .
PHYSICAL REVIEW LETTERS, 1992, 69 (09) :1415-1418
[5]  
FORTNER J, 1993, IN PRESS
[6]  
GRANSTAFF SM, 1977, I PHYSICS C SERIES, V30, P511
[7]   Liquid mixtures of tellurium and sodium telluride I. Specific resistance as a function of composition and temperature [J].
Kraus, CA ;
Glass, SW .
JOURNAL OF PHYSICAL CHEMISTRY, 1929, 33 :984-994
[8]  
Meyer W., 1937, Z TECHN PHYS, V18, P588
[9]   METAL-INSULATOR TRANSITIONS IN NON-CRYSTALLINE SYSTEMS [J].
MOTT, NF .
ADVANCES IN PHYSICS, 1985, 34 (03) :329-401
[10]   THE MINIMUM METALLIC CONDUCTIVITY IN THE PRESENCE OF A STRONG MAGNETIC-FIELD [J].
MOTT, NF .
PHILOSOPHICAL MAGAZINE LETTERS, 1992, 66 (02) :57-60