Holstein magneto-polarons: from Landau levels to Hofstadter butterflies
arXiv:1011.1965 · doi:10.1103/PhysRevB.82.201102
Abstract
We study the Holstein polaron in transverse magnetic field using non-perturbational methods. At strong fields and large coupling, we show that the polaron has a Hofstadter spectrum, however very distorted and of lower symmetry than that of a (heavier) bare particle. For weak magnetic fields, we identify non-perturbational behaviour of the Landau levels not previously known.
4 pages, 4 figures
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