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Mobile small polaron

A. S. Alexandrov·P. E. Kornilovitch
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Abstract

Extending the Froehlich polaron problem to a discrete ionic lattice we study a polaronic state with a small radius of the wave function but a large size of the lattice distortion. We calculate the energy dispersion and the effective mass of the polaron with the 1/λperturbation theory and with the exact Monte Carlo method in the nonadiabatic and adiabatic regimes, respectively. The ``small'' Froehlich polaron is found to be lighter than the small Holstein polaron by one or more orders of magnitude.

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A. S. Alexandrov, P. E. Kornilovitch. 1999-02-17. Mobile small polaron. https://doi.org/10.1103/physrevlett.82.807

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