ELECTRICAL-CONDUCTIVITY FOR LLOYDS DISORDER MODEL IN ONE DIMENSION

被引：2

作者：

CZYCHOLL, G ^{[1
]}

ZITTARTZ, J ^{[1
]}

机构：

[1] UNIV COLOGNE,INST THEORET PHYS,D-5000 COLOGNE 41,FED REP GER

来源：

SOLID STATE COMMUNICATIONS | 1979年 / 30卷 / 05期

关键词：

D O I：

10.1016/0038-1098(79)90078-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We consider the electrical dc-conductivity for Lloyd's disorder model in one dimension. First we calculate the conductivity within the CPA and the MCPA theory of electronic transport. For all values of the disorder parameter γ, which is the fluctuation width of random site energies, the MCPA leads to a substantial reduction of the conductivity as compared with the CPA-treatment. Secondly we investigate the case of large disorder, γ → ∞, by an asymptotic expansion. It is found that the conductivity vanishes order by order in an expansion in γ-1 which strongly suggests that it vanishes identically for all γ. © 1979.

引用

页码：289 / 292

页数：4

共 11 条

[1] ELECTRONIC TRANSPORT IN SUBSTITUTIONALLY DISORDERED SYSTEMS .1. DERIVATION OF A CLUSTER APPROXIMATION [J].

CZYCHOLL, G ;

ZITTARTZ, J .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1978, 30 (04) :375-381

[2]

CZYCHOLL G, UNPUBLISHED

[3]

CZYCHOLL G, 1977, THESIS U KOLN

[4] ELECTRICAL-CONDUCTIVITY IN CPA NUMERICAL RESULTS [J].

HERMANN, H .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1974, 66 (02) :K71-K73

[5] ELECTRICAL-CONDUCTIVITY AND ELECTRON LOCALIZATION FOR LLOYD MODEL [J].

HOSHINO, K .

PHYSICS LETTERS A, 1976, 56 (02) :133-134

[6] EXACTLY SOLVABLE MODEL OF ELECTRONIC STATES IN A 3-DIMENSIONAL DISORDERED HAMILTONIAN - NON-EXISTENCE OF LOCALIZED STATES [J].

LLOYD, P .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1969, 2 (10) :1717-+

[7] ELECTRIC CONDUCTIVITY FOR LLOYDS DISORDERED LATTICE MODEL [J].

SAITOH, M .

PROGRESS OF THEORETICAL PHYSICS, 1971, 45 (03) :746-&

[8] CONTRIBUTION TO MANY SITE THEORY OF DISORDERED SYSTEM [J].

TSUKADA, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1972, 32 (06) :1475-&

[9] A NEW METHOD FOR ELECTRONIC STRUCTURE OF RANDOM LATTICE - COEXISTENCE OF LOCAL AND BAND CHARACTER [J].

TSUKADA, M .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1969, 26 (03) :684-+

[10] THEORY OF ELECTRONIC TRANSPORT IN DISORDERED BINARY ALLOYS - COHERENT-POTENTIAL APPROXIMATION [J].

VELICKY, B .

PHYSICAL REVIEW, 1969, 184 (03) :614-&

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