Composite polaron formed on surface of two-dimensional lattice system in weak coupling regime
Abstract
We investigate the properties of composite polaron containing the effects of electron-phonon coupling and interaction between impurity and electron-hole pair. A model of a two-dimensional electron gas occupying the surface of two-dimensional Dirac honeycomb lattice is constructed. We focus on the weak coupling regime throughout the whole paper. Our results are meaningful to the study of pairing mechanism as well as the phonon-mediated high-temperature superconductivity.
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