Spectral properties of the 2D Holstein t-J model
arXiv:cond-mat/9612202 · doi:10.1016/S0921-4534(97)01044-7
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.
2 pages, Latex. Submitted to Physica C, Proc. Int. Conf. on M2HTSC V