Benutzerhandbuch Datenschutzhinweis Impressum Kontakt





Phenomenology of Heavy Fermion Systems

Es sind keine MPG-Autoren in der Publikation vorhanden
Externe Ressourcen
Es sind keine Externen Ressourcen verfügbar
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar

Steglich, F., Bredl, C. D., de Boer, F. R., Lang, M., Rauchschwalben, U., Rietschel, H., et al. (1987). Phenomenology of Heavy Fermion Systems. Physica Scripta, T19A, 253-259. doi:10.1088/0031-8949/1987/T19A/035.

Local heavy fermions are formed at the sites of independent Kondo ions as substantiated by the discovery of a pronounced low temperature anomaly in the thermal expansion of certain dilute and moderately concentrated Ce alloys. In periodic Kondo lattice systems like CeAl3 a coherent heavy fermion band structure is developed at low T, one hallmark of which is a maximum in the Sommerfeld coefficient γ(T) near 0.4 K. This distinct phenomenon can even show up in the presence of long-range magnetic order as in CeCu2Ge2 and is found to have a strong influence on the superconducting properties of CeCu2Si2. According to its normal-state behavior, UBe13 appears to be closely related to the Ce-based Kondo lattices. A number of the superconducting properties of pure and Th-doped UBe13 can be well understood in terms of an anisotropic pairing interaction, which seems to track the anisotropy of the Fermi surface. This leads to a reinterpretation of the phase diagram of the superconducting states in U1-xThxBe13.