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RESEARCH PRODUCT
The peculiarities of the phase diagram of heavy fermion metal CeCoIn5
Vladimir A. StephanovichVasily R. ShaginyanE. V. Kirichenkosubject
PhysicsQuantum phase transitionSuperconductivityPhase transitionCondensed matter physicsMechanical EngineeringCondensationMetals and AlloysFermionMagnetic fieldMechanics of MaterialsQuantum mechanicsMaterials ChemistryQuasiparticlePhase diagramdescription
We analyze the low temperature experimental magnetic field–temperature H–T phase diagram of CeCoIn5. We demonstrate that its main features can be well explained within Landau quasiparticle picture incorporating the fact that quasiparticles form so-called fermion-condensate (FC) state emerging behind the fermion condensation quantum phase transition (FCQPT). We show that near FCQPT, the fluctuations are strongly suppressed while FC by itself is “protected” from above fluctuations by the first order phase transition. We demonstrate that the electronic system of CeCoIn5 can be shifted from the ordered towards disordered side of FCQPT by the application of magnetic field therefore giving a unique possibility to study the relationship between quasiparticles and non-Fermi-liquid behavior. © 2007 Elsevier B.V. All rights reserved.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-09-01 | Journal of Alloys and Compounds |