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

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

1995-05-08

arxiv.org/abs/cond-mat/9505032v2

Physics

Condensed Matter

1 figure uufile instead of ps file is attached at the bottom. No other changes has been made.

Scientific paper

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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