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Polaron features of the one-dimensional Holstein Molecular Crystal Model | | V. Cataudella
; G. De Filippis
; G. Iadonisi
; | | Date: |
10 Nov 2000 | | Journal: | PRB: 62, 1496 (2000) | | Subject: | cond-mat | | Abstract: | The polaron features of the one-dimensional Holstein Molecular Crystal Model are investigated by improving a variational method introduced recently and based on a linear superposition of Bloch states that describe large and small polaron wave functions. The mean number of phonons, the polaron kinetic energy, the electron-phonon local correlation function, and the ground state spectral weight are calculated and discussed. A crossover regime between large and small polaron for any value of the adiabatic parameter $omega_0/t$ is found and a polaron phase diagram is proposed. | | Source: | arXiv, cond-mat/0011180 | | Services: | Forum | Review | PDF | Favorites | |
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