Effects of diagonal disorder on charge density wave and superconductivity in local pair systems

We analyse the influence of diagonal disorder (random site energy) on charge density wave (CDW) and superconductivity (SS) in local pair systems which are described by the model of hard core charged bosons on a lattice. This problem was previously studied within the mean field approximation for the...

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Bibliographic Details
Published in:Physica A 2001-10, Vol.299 (3), p.475-493
Main Authors: Pawłowski, Grzegorz, Robaszkiewicz, Stanisław
Format: Article
Language:English
Subjects:
Charge density waves
Disordered systems
Hard-core bosons
Local electron pairing (local pairs)
Phase separations
Superconductivity
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Summary:We analyse the influence of diagonal disorder (random site energy) on charge density wave (CDW) and superconductivity (SS) in local pair systems which are described by the model of hard core charged bosons on a lattice. This problem was previously studied within the mean field approximation for the case of half-filled band ( n=1). Here we extend that investigation to the case of arbitrary particle concentration (0< n
ISSN:0378-4371
1873-2119
DOI:10.1016/S0378-4371(01)00261-8