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Mobile small polaron

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preprint
posted on 31.03.2006, 15:55 by A.S. Alexandrov, P.E. Kornilovitch
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/\lambda perturbation 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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School

  • Science

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  • Physics

Pages

126677 bytes

Publication date

1998

Notes

This is a pre-print. The definitive version: ALEXANDROV and KORNILOVITCH, 1999. Mobile small polaron. Physical Review Letters, 82(4), pp. 807-810, is available at: http://prl.aps.org/.

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en

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Loughborough Publications

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