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RESEARCH PRODUCT
Quantum Criticality of Heavy-Fermion Compounds
Vladimir A. StephanovichVasily R. ShaginyanMiron AmusiaKonstantin G. Popovsubject
SuperconductivityPhysicsQuantum phase transitionEffective mass (solid-state physics)CriticalityQuantum mechanicsState of matterCondensed Matter::Strongly Correlated ElectronsFermionQuantumPhase diagramdescription
Chapter 17 is devoted to the quantum criticality of quantum spin liquids. In this chapter we continue to consider the nature of quantum criticality in HF compounds. The quantum criticality induced by the fermion condensation quantum phase transition extends over a wide range in the \(T-B\) phase diagram. As we shall see, the quantum criticality in all such different HF compounds, as high-\(T_c\) superconductors, HF metals, compounds with quantum spin liquids, quasicrystals, and 2D quantum liquids, is of the same nature. This challenging similarity between different HF compounds expresses universal physics that transcends the microscopic details of the compounds. This uniform behavior, induced by the universal quantum critical physics, allows us to view it as the main characteristic of new state of matter. We construct the \(T-B\) phase diagrams, and explain main features of experimental facts of low-temperature thermodynamic properties in terms of FCQPT that leads to the formation of flat bands.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-10-26 |