Quasiparticles and order parameter near quantum phase transition in heavy fermion metals

Details Quasiparticles and order parameter near quantum phase transition in heavy fermion metals Quasiparticles and order parameter near quantum phase transition in heavy fermion metals

2005-01-05

arxiv.org/abs/cond-mat/0501093v2

Phys. Lett. A 338, 393 (2005).

Physics

Condensed Matter

Strongly Correlated Electrons

14 pages, revised and accepted by Physics Letters A

Scientific paper

10.1016/j.physleta.2005.02.036

It is shown that the Landau paradigm based upon both the quasiparticle concept and the notion of the order parameter is valid and can be used to explain the anomalous behavior of the heavy fermion metals near quantum critical points. The understanding of this phenomenon has been problematic largely because of the absence of theoretical guidance. Exploiting this paradigm and the fermion condensation quantum phase transition, we investigate the anomalous behavior of the heavy electron liquid near its critical point at different temperatures and applied magnetic fields. We show that this anomalous behavior is universal and can be used to capture the essential aspects of recent experiments on heavy-fermion metals at low temperatures.

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