Superconductivity fluctuations in a one-dimensional two-band electron-phonon model with strong repulsive interactions
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We study a one-dimensional, two-band model with short-range electron-electron repulsions (onsite U and nearest-neighbor 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 and V.
KeywordsSpectroscopy State Physics Field Theory Elementary Particle Quantum Field Theory
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