Theory of coexistence of superconductivity and ferroelectricity

Abstract

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.

3 pages, 1 figure

References in corpus (2)

• Dipole Interactions and Electrical Polarity in Nanosystems -- the Clausius-Mossotti and Related Models
• Electrostatic interface tuning in correlated superconducting heterostructures

Cited by in corpus (1)

• Coexistence of spontaneous polarization and superconductivity in hole-doped oxyhydrides ATiO_2H (A=K, Rb, Cs): first-principles study