Isotope effect on the electron band structure of doped insulators

P. E. Kornilovitch; A. S. Alexandrov

doi:10.1103/physrevb.70.224511

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Isotope effect on the electron band structure of doped insulators

P. E. Kornilovitch·A. S. Alexandrov

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Abstract

Applying a continuous-time quantum Monte-Carlo algorithm we calculate the exact coherent band dispersion and the density of states of a two dimensional lattice polaron in the region of parameters where any approximation might fail. We find an isotope effect on the band structure, which is different for different wave-vectors of the Brillouin zone and depends on the radius and strength of the electron-phonon interaction. An isotope effect on the electron spectral function is also discussed.

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P. E. Kornilovitch, A. S. Alexandrov. 2004-07-10. Isotope effect on the electron band structure of doped insulators. https://doi.org/10.1103/physrevb.70.224511

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