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arXiv · 0710.5296

Non-Fermi-Liquid Behavior from the Fermi-Liquid Approach

V. A. Khodel·J. W. Clark·H. Li·V. M. Yakovenko·M. V. Zverev
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Abstract

Non-Fermi liquid behavior of strongly correlated Fermi systems is derived within the Landau approach. We attribute this behavior to a phase transition associated with a rearrangement of the Landau state that leads to flattening of a portion of the single-particle spectrum $\epsilon({\bf p})$ in the vicinity of the Fermi surface. We demonstrate that the quasiparticle subsystem responsible for the flat spectrum possesses the same thermodynamic properties as a gas of localized spins. Theoretical results compare favorably with available experimental data. While departing radically from prevalent views on the origin of non-Fermi-liquid behavior, the theory advanced here is nevertheless a conservative one of in continuing to operate within the general framework of Landau theory.

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V. A. Khodel, J. W. Clark, H. Li, V. M. Yakovenko, M. V. Zverev. 2007-10-28. Non-Fermi-Liquid Behavior from the Fermi-Liquid Approach. https://doi.org/10.1142/9789812709592_0004

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