Phase Diagram of Heavy Fermion Metal CeCoIn5

Details Phase Diagram of Heavy Fermion Metal CeCoIn5 Phase Diagram of Heavy Fermion Metal CeCoIn5

2006-02-25

arxiv.org/abs/cond-mat/0602602v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 1 figure

Scientific paper

We present a comprehensive analysis of the low temperature experimental H-T phase diagram of CeCoIn5. The main universal features of the diagram can be explained within the Fermi-liquid theory provided that quasiparticles form so called fermion-condensate state. We show that in this case the fluctuations accompanying an ordinary quantum critical point are strongly suppressed and cannot destroy the quasiparticles. Analyzing the phase diagram and giving predictions, we demonstrate that the electronic system of CeCoIn5 provides a unique opportunity to study the relationship between quasiparticles properties and non-Fermi liquid behavior.

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