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Spectral properties of the 2D Holstein t-J model

H. Fehske·G. Wellein·B. Bäuml·R. N. Silver
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Abstract

Employing the Lanczos algorithm in combination with a kernel polynomial moment expansion (KPM) and the maximum entropy method (MEM), we show a way of calculating charge and spin excitations in the Holstein t-J model, including the full quantum nature of phonons. To analyze polaron band formation we evaluate the hole spectral function for a wide range of electron-phonon coupling strengths. For the first time, we present results for the optical conductivity of the 2D Holstein t-J model.

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H. Fehske, G. Wellein, B. Bäuml, R. N. Silver. 1996-12-23. Spectral properties of the 2D Holstein t-J model. https://doi.org/10.1016/s0921-4534(97)01044-7

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