Fermi Liquid Theory on Heavy Electron Systems
نویسندگان
چکیده
منابع مشابه
Breakdown of the Fermi liquid theory in heavy fermion compounds
We review the anomalous properties of heavy fermion compounds like CeCu6−xAux or CeMIn5 close to a zero temperature phase transition called a quantum critical point. Anomalous behavior of the resistivity, specific heat and magnetic properties observed in various compounds suggests a fundamental breakdown of the Fermi liquid theory. Recent measurements on YbRh2Si2, field-tuned through the quantu...
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Landau developed the idea of quasiparticle excitations in the context of interacting Fermi systems. His theory is known as Fermi liquid theory. He introduced the idea phenomenologically, and later Abrikosov and Kalatnikov gave a formal derivation using diagrammatic perturbation theory to all orders. Landau suggested describing the excited states of the interacting system as in one-to-one corres...
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I have chosen to use a spin notation of “up” or “down” with respect to a convenient z axis rather than a more rotationally invariant formulation. The quantity εp is not the same as in the interacting system, but can be expanded in the same way about p = pF εp = εF + vF (p − pF )+ · · · (3) where εF , vF are not the same as in the noninteracting system. The single quasiparticle energy does not d...
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The question of Fermi liquid vs. non–Fermi liquid behavior induced by strong correlations is one of the prominent problems in metallic local moment systems. As standard models for such systems, the SU(N)×SU(M) Anderson impurity models exhibit both Fermi liquid and non–Fermi liquid behavior, depending on their symmetry. Using an auxiliary boson method, we present a generally applicable scheme to...
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The question of Fermi liquid vs. non–Fermi liquid behavior induced by strong correlations is one of the prominent problems in metallic local moment systems. As standard models for such systems, the SU(N)×SU(M) Anderson impurity models exhibit both Fermi liquid and non–Fermi liquid behavior, depending on their symmetry. Taking the Anderson model as an example, these lectures first give an introd...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 1992
ISSN: 0375-9687
DOI: 10.1143/ptps.108.141