Phys. Rev. Lett. 55, 995–998 (1985)Gutzwiller Variational Approximation to the Heavy-Fermion Ground State of the Periodic Anderson ModelSee Also: Erratum Received 15 May 1985; published in the issue dated 26 August 1985 A variational wave function for the Kondo-lattice limit of the periodic Anderson model is evaluated with a Gutzwiller approximation. We obtain a characteristic energy from this coherent wave function of the Kondo form but with a different exponent in the case of finite degeneracy. The effective mass and charge and spin susceptibilities are evaluated, and only in the case of large degeneracy and not too small hybridization strength is a heavy-Fermi-liquid state stable against magnetic order. © 1985 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.55.995
DOI:
10.1103/PhysRevLett.55.995
PACS:
75.20.Hr, 71.10.+x, 71.45.-d
See AlsoErratum: T. M. Rice and K. Ueda, Gutzwiller Variational Approximation to the Heavy-Fermion Ground State of the Periodic Anderson Model, Phys. Rev. Lett. 55, 2093 (1985). |
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