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The widths of single-particle states of anisotropic, strongly correlated electron systems in solids

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Abstract

The damping γ(ε) of electron states in crystals is investigated beyond the phase transition point related to a rearrangement of the Fermi surface. Attention is focused on the alteration of the standard Landau theory due to the emergence of a flat portion in the spectrum ξ(p) of single-particle excitations as a result of the rearrangement. In the limit ε →0, the width γ(ε) of the states in the region of the Brillouin zone where the dispersion of ξ(p) is of an ordinary order of magnitude is found to depend on ε almost linearly, in contrast to the Fermi-liquid-theory result γ(ε)∼ε2.

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Authors and Affiliations

  1. Kurchatov Institute, Russian Research Center, 123182, Moscow, Russia

    V. A. Khodel & M. V. Zverev

Authors
  1. V. A. Khodel
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  2. M. V. Zverev
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Additional information

Pis’ma Zh. Éksp. Teor. Fiz. 70, No. 11, 759–765 (10 December 1999)

Published in English in the original Russian journal. Edited by Steve Torstveit.

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Khodel, V.A., Zverev, M.V. The widths of single-particle states of anisotropic, strongly correlated electron systems in solids. Jetp Lett. 70, 772–779 (1999). https://doi.org/10.1134/1.568261

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  • DOI: https://doi.org/10.1134/1.568261

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