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Quantum dynamic localization in the Holstein Hamiltonian at finite temperatures
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Troisi, Alessandro (2010) Quantum dynamic localization in the Holstein Hamiltonian at finite temperatures. Physical Review B (Condensed Matter and Materials Physics), Vol.82 (No.24). article no. 245202 . doi:10.1103/PhysRevB.82.245202 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.82.245202
Abstract
It is shown that dynamic localization of the charge carrier is present in the simple Holstein Hamiltonian (fully quantum and without random variables) if the polaron binding energy is sufficiently small and the small polaron is not formed at high temperature. Previously, this idea was only explored in semiclassical models of organic semiconductors. Band renormalization cannot be used in the presence of dynamic localization, which is best studied with a vibronic basis set introduced here. The lifetime of these vibronic states can be estimated using second-order renormalized perturbation theory. In the regime of dynamic localization the diffusivity displays a transition between metal-like and insulator-like transport as the temperature increases, similar to that predicted and observed in the nonadiabatic regime.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Science > Centre for Scientific Computing |
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| Library of Congress Subject Headings (LCSH): | Hamiltonian operator, Quantum theory, Electron-phonon interactions | ||||
| Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1098-0121 | ||||
| Official Date: | 2010 | ||||
| Dates: |
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| Volume: | Vol.82 | ||||
| Number: | No.24 | ||||
| Page Range: | article no. 245202 | ||||
| DOI: | 10.1103/PhysRevB.82.245202 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), Leverhulme Trust (LT) |
Data sourced from Thomson Reuters' Web of Knowledge
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