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Heavy fermions in the Kondo lattice as neutral quasiparticles

✍ Scribed by Yu. Kagan; K.A. Kikion; N.V. Prokof'ev

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
498 KB
Volume
182
Category
Article
ISSN
0921-4526

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✦ Synopsis

The origin of heavy fermions in the f-electron compounds with nearly integer valence is discussed. General arguments in favor of uncharged Fermi excitations of spin origin as quasiparticles giving a main contribution to low-temperature thermodynamics are presented. Various experiments (frequency dependent conductivity, De Haas-Van Alphen effect, superconducting phase transition) are reviewed from this point of view.

πŸ“œ SIMILAR VOLUMES

Quantum critical behavior of heavy fermi
Quantum critical behavior of heavy fermions: Quasiparticles in the Gaussian fluctuation regime
✍ P. WΓΆlfle; E. Abrahams πŸ“‚ Article πŸ“… 2011 πŸ› John Wiley and Sons 🌐 English βš– 262 KB

## Abstract Landau quasiparticle (qp) theory may be extended into the non‐Fermi liquid regime of metallic compounds near a quantum critical point (QCP), provided the width of the quasiparticle states is less than their energy. Sufficiently far from the QCP, when the critical fluctuations are non‐in