Interplay between dispersive and non-dispersive modes in the polaron problem

L. Cruzeiro-Hansson; J. C. Eilbeck; J. L. Marín; F. M. Russell

doi:10.1016/S0375-9601(00)00029-3

Interplay between dispersive and non-dispersive modes in the polaron problem

L. Cruzeiro-Hansson, J. C. Eilbeck, J. L. Marín, F. M. Russell

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We study the influence of the phonon spectrum on polaron formation and show that three self-trapping regimes can occur. If the lattice and the electron-lattice Hamiltonians are dominated by the same type of phonons, the self-trapping transition is smooth. If there is an imbalance, the transition can either be abrupt or completely eliminated. The binding energies are larger in the case of imbalance. The bandwidth varies linearly with hopping strength, even for strongly localized states. (C) 2000 Elsevier Science B.V.

Original language	English
Pages (from-to)	160-166
Number of pages	7
Journal	Physics Letters A
Volume	266
Issue number	2-3
DOIs	https://doi.org/10.1016/S0375-9601(00)00029-3
Publication status	Published - 21 Feb 2000

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AU - Marín, J. L.

AU - Russell, F. M.

PY - 2000/2/21

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N2 - We study the influence of the phonon spectrum on polaron formation and show that three self-trapping regimes can occur. If the lattice and the electron-lattice Hamiltonians are dominated by the same type of phonons, the self-trapping transition is smooth. If there is an imbalance, the transition can either be abrupt or completely eliminated. The binding energies are larger in the case of imbalance. The bandwidth varies linearly with hopping strength, even for strongly localized states. (C) 2000 Elsevier Science B.V.

AB - We study the influence of the phonon spectrum on polaron formation and show that three self-trapping regimes can occur. If the lattice and the electron-lattice Hamiltonians are dominated by the same type of phonons, the self-trapping transition is smooth. If there is an imbalance, the transition can either be abrupt or completely eliminated. The binding energies are larger in the case of imbalance. The bandwidth varies linearly with hopping strength, even for strongly localized states. (C) 2000 Elsevier Science B.V.

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DO - 10.1016/S0375-9601(00)00029-3

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VL - 266

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EP - 166

JO - Physics Letters A

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ER -

Interplay between dispersive and non-dispersive modes in the polaron problem

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