Theory of coexistence of superconductivity and ferroelectricity

Details Theory of coexistence of superconductivity and ferroelectricity Theory of coexistence of superconductivity and ferroelectricity

2006-01-18

arxiv.org/abs/cond-mat/0601407v1

Physics

Condensed Matter

Superconductivity

3 pages, 1 figure

Scientific paper

A new investigation of the coexistence and competition of ferroelectricity and superconductivity is reported. In particular we show that the starting Hamiltonian of a previous study by Birman and Weger (2001) can be exactly diagonalized. The result differs significantly from mean-field theory. A Hamiltonian with a different realization of the coupling between ferroelectricity and superconductivity is proposed. We report the results for mean-field theory applied to this Hamiltonian. We find that the order parameters are strongly affected by this coupling.

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