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Superconductivity Fluctuations in a One-dimensional Two Band Electron-Phonon Model with Strong Repulsive Interactions

S. I. Matveenko·A. R. Bishop·A. Balatsky
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Abstract

We study a one-dimensional, two band model with short range electron-electron repulsions (onsite $U$ and nearest-neighbour $V$ terms) and electron-phonon coupling. We show that there is a region of $U$,$V$ and band filling in which singlet superconductivity fluctuations are dominant. This region is absent without electron-phonon interactions and includes large values of $U$,$V$.

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S. I. Matveenko, A. R. Bishop, A. Balatsky. 1995-05-09. Superconductivity Fluctuations in a One-dimensional Two Band Electron-Phonon Model with Strong Repulsive Interactions. https://arxiv.org/abs/cond-mat/9505032

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