Non-Fermi-liquid states of a magnetic ion in a metal

I. E. Perakis, C. M. Varma, and A. E. Ruckenstein
Phys. Rev. Lett. 70, 3467 – Published 31 May 1993
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Abstract

A model of a local orbital coupled through repulsive interactions to both the hybridizing and the screening channels of a conduction band is solved by Wilson’s renormalization group method. At particle-hole symmetry we find non-Fermi-liquid lines of critical points when the interaction in the screening channel is above a critical value. Away from particle-hole symmetry the system displays two stable Fermi-liquid fixed points of different symmetries, separated by a non-Fermi liquid quantum critical point, in the mixed-valence regime. The behavior in the vicinity of this point is consistent with the marginal Fermi-liquid hypothesis.

  • Received 4 February 1993

DOI:https://doi.org/10.1103/PhysRevLett.70.3467

©1993 American Physical Society

Authors & Affiliations

I. E. Perakis and C. M. Varma

  • AT&T Bell Laboratories, Murray Hill, New Jersey 07974

A. E. Ruckenstein

  • Serin Physics Laboratory, Rutgers University, Piscataway, New Jersey 08855

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Vol. 70, Iss. 22 — 31 May 1993

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