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Superconductivity in the doped “pseudo-ladder” compound CaCu2O3

✍ Scribed by N.M. Plakida; A. Vladimirov; S.-L. Drechsler

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
248 KB
Volume
408-410
Category
Article
ISSN
0921-4534

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✦ Synopsis

An effective anisotropic t-J model for the ''pseudo-ladder'' compound CaCu 2 O 3 is proposed based on recent experimental studies and LDA band structure calculations. Superconducting pairing mediated by the exchange interaction in the model is investigated as a function of doping away from the antiferromagnetic insulating state. It is shown that strong anisotropy in the electronic spectrum suppresses superconducting temperature in comparison with conventional copper-oxide superconductors with square lattices.

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