Self-Trapping of Polarons in the Rashba-Pekar Model

Details Self-Trapping of Polarons in the Rashba-Pekar Model Self-Trapping of Polarons in the Rashba-Pekar Model

2002-05-29

arxiv.org/abs/cond-mat/0205606v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 5 figures, Accepted to Phys. Rev. B Rapid Communications

Scientific paper

10.1103/PhysRevB.66.020301

We performed quantum Monte Carlo study of the exciton-polaron model which features the self-trapping phenomenon when the coupling strength and/or particle momentum is varied. For the first time accurate data for energy, effective mass, the structure of the polaronic cloud, dispersion law, and spectral function are available throughout the crossover region. We observed that self-trapping can not be reduced to hybridization of two states with different lattice deformation, and that at least three states are involved in the crossover from light- to heavy-mass regimes.

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