Phenomenological trends for heavy Fermi liquids and narrow-band metals

A phenomenological correlation is presented for the magnetic susceptibility chi * and the electronic heat-capacity coefficient gamma * of a large number of narrow-band and heavy-fermion metals. A novel method of plotting chi */ gamma * vs. gamma * reveals quantitative boundaries for distinct regions...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1986-03, Vol.33 (5), p.3556-3559
Main Author: DELONG, L. E
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Materials science
Metals, semimetals and alloys
Other topics in magnetic properties and materials
Physics
Saturation moments and magnetic susceptibilities
Specific materials
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Summary:A phenomenological correlation is presented for the magnetic susceptibility chi * and the electronic heat-capacity coefficient gamma * of a large number of narrow-band and heavy-fermion metals. A novel method of plotting chi */ gamma * vs. gamma * reveals quantitative boundaries for distinct regions of superconducting, magnetically ordered, and paramagnetic ground states. It is suggested that magnetic interactions are a primary limitation for the T sub c of "conventional" superconductors, whereas a more delicate interplay exists between magnetic order, paramagnetism, and superconductivity above a threshold value of gamma * which defines the onset of magnetic order. 27 ref.--AA
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.33.3556