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Inhomogeneous superconducting state in quasi-one-dimensional systems

Kun Yang
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Abstract

We report on results of theoretical study of non-uniform superconducting states in quasi-one-dimensional systems, with attractive interactions and Zeeman splitting between electron spins. Using bosonization to treat intrachain electron-electron interactions, and a combination of renormalization group and mean-field approximation to tackle interchain couplings, we obtain the phase diagram of the system, and show that the transition between the uniform and non-uniform superconducting phases is a continuous transition of the commensurate-incommensurate type.

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Kun Yang. 2000-12-20. Inhomogeneous superconducting state in quasi-one-dimensional systems. https://doi.org/10.1103/physrevb.63.140511

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