Experimental evidence for predicted universal behavior in low-temperature Kondo lattices

Journal Article · Mon Sep 01 04:00:00 EDT 1986 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.34.3524· OSTI ID:5063778

Auerbach, A; Levin, K

We have previously shown that the 1/N-italic expansion of the Kondo lattice leads to the following predictions concerning the heavy-Fermi-liquid state: (i) the low-temperature specific heat behaves as C-italic/sub ..nu../ = ..gamma..TproportionalT/T-bar/sub K/ with corrections ..delta..C-italic/sub ..nu../ = (T/T-bar/sub K/)/sup 3/ ln(T-italic/T-bar/sub K-italic/), (ii) the zero-temperature spin susceptibility chiproportional1/T-bar/sub K-italic/, and (iii) the resistivity rhoproportional(T-italic/T-bar/sub K-italic/)/sup 2/. These results all contain a unique energy scale T-bar/sub K-italic/. Here we analyze recent pressure-dependent specific-heat measurements on UPt/sub 3/ combined with chi and rho data to confirm the scaling of these quantities with one strongly pressure-dependent energy scale ..gamma../sup -1/. This picture is further supported by evidence of systematic scaling of chi and rho with ..gamma.. throughout the entire class of heavy-fermion compounds. This behavior, along with other experimental observations, suggests that the low-T-italic properties of UPt/sub 3/ do not derive from ferromagnetic spin fluctuations.

• Research Organization: The James Franck Institute, The University of Chicago, Chicago, Illinois 60637
• OSTI ID: 5063778
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 34:5; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE ALLOYS
ALLOYS
ANGULAR MOMENTUM
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERMETALLIC COMPOUNDS
KONDO EFFECT
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
PRESSURE DEPENDENCE
SCALING LAWS
SERIES EXPANSION
SPECIFIC HEAT
SPIN
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
URANIUM ALLOYS