Influence of quantum lattice fluctuations on the stability of large polarons in anisotropic electron-phonon systems
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We discuss the stability of large polarons in anisotropic media taking into account small-polaron narrowing of the electron band. It was shown that electron-phonon interaction may cause an additional anisotropy of the electron overlap integrals. Large-polaron stability in realistic substances is interpreted in terms of these results.
Извор:Physical Review B: Condensed Matter and Materials Physics, 2007, 76, 5
ISSN: 1098-0121 (print)