Quasiparticles near quantum phase transition in heavy fermion metals

Details Quasiparticles near quantum phase transition in heavy fermion metals Quasiparticles near quantum phase transition in heavy fermion metals

2005-06-23

arxiv.org/abs/cond-mat/0506603v1

Physica B 378-380, 127 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 1 figure, submitted to the SCES'05

Scientific paper

10.1016/j.physb.2006.01.050

We have shown that the Landau paradigm based upon both the quasiparticle concept and the notion of the order parameter can be used to explain the anomalous behavior of heavy fermion metals. Exploiting this paradigm and the fermion condensation quantum phase transition (FCQPT) we show that this anomalous behavior is universal and can be used to capture the essential aspects of recent experiments on the heavy-fermion metals at low temperatures. Behind FCQPT a tunneling conductivity between a heavy fermion metal and a simple metallic point can be noticeably dissymmetrical with respect to the change of voltage bias. We show that at T=0 and beyond FCQPT the Hall coefficient undergoes a jump upon magnetic-field tuning HF metals.

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