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Title: Investigation of Anderson lattice behavior in Yb1-xLuxAl3

Abstract

Measurements of magnetic susceptibility {chi}(T), specific heat C(T), Hall coefficient R{sub H}(T), and Yb valence {nu} = 2 + n{sub f} [f-occupation number n{sub f} (T) determined from Yb L{sub 3} x-ray absorption measurements] were carried out on single crystals of Yb{sub 1-x}Lu{sub x}Al{sub 3}. The low temperature anomalies observed in {chi}(T) and C(T) corresponding to an energy scale T{sub coh} {approx} 40 K in the intermediate valence, Kondo lattice compound YbAl{sub 3} are suppressed by Lu concentrations as small as 5% suggesting these low-T anomalies are extremely sensitive to disorder and, therefore, are a true coherence effect. By comparing the temperature dependence of various physical quantities to the predictions of the Anderson Impurity Model, the slow crossover behavior observed in YbAl{sub 3}, in which the data evolve from a low-temperature coherent, Fermi-liquid regime to a high temperature local moment regime more gradually than predicted by the Anderson Impurity Model, appears to evolve to fast crossover behavior at x {approx} 0.7 where the evolution is more rapid than predicted. These two phenomena found in Yb{sub 1-x}Lu{sub x}Al{sub 3}, i.e., the low-T anomalies and the slow/fast crossover behavior are discussed in relation to recent theories of the Anderson lattice.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director. Office of Science. Office of Basic Energy Sciences. Contracts DE-AC03-76SF00098 and DE-FG03-03ER46036 (US)
OSTI Identifier:
834633
Report Number(s):
LBNL-53890
R&D Project: 403005; TRN: US0407291
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review B; Journal Volume: 69; Other Information: Submitted to Physical Review B, Volume 69; Journal Publication Date: 2004; PBD: 6 Oct 2003
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; FERMI GAS; MAGNETIC SUSCEPTIBILITY; MONOCRYSTALS; SPECIFIC HEAT; TEMPERATURE DEPENDENCE; VALENCE

Citation Formats

Bauer, E.D., Booth, C.H., Lawrence, J.M., Hundley, M.F., Sarrao, J.L., Thompson, J.D., Riseborough, P.S., and Ebihara, T.. Investigation of Anderson lattice behavior in Yb1-xLuxAl3. United States: N. p., 2003. Web.
Bauer, E.D., Booth, C.H., Lawrence, J.M., Hundley, M.F., Sarrao, J.L., Thompson, J.D., Riseborough, P.S., & Ebihara, T.. Investigation of Anderson lattice behavior in Yb1-xLuxAl3. United States.
Bauer, E.D., Booth, C.H., Lawrence, J.M., Hundley, M.F., Sarrao, J.L., Thompson, J.D., Riseborough, P.S., and Ebihara, T.. Mon . "Investigation of Anderson lattice behavior in Yb1-xLuxAl3". United States. https://www.osti.gov/servlets/purl/834633.
@article{osti_834633,
title = {Investigation of Anderson lattice behavior in Yb1-xLuxAl3},
author = {Bauer, E.D. and Booth, C.H. and Lawrence, J.M. and Hundley, M.F. and Sarrao, J.L. and Thompson, J.D. and Riseborough, P.S. and Ebihara, T.},
abstractNote = {Measurements of magnetic susceptibility {chi}(T), specific heat C(T), Hall coefficient R{sub H}(T), and Yb valence {nu} = 2 + n{sub f} [f-occupation number n{sub f} (T) determined from Yb L{sub 3} x-ray absorption measurements] were carried out on single crystals of Yb{sub 1-x}Lu{sub x}Al{sub 3}. The low temperature anomalies observed in {chi}(T) and C(T) corresponding to an energy scale T{sub coh} {approx} 40 K in the intermediate valence, Kondo lattice compound YbAl{sub 3} are suppressed by Lu concentrations as small as 5% suggesting these low-T anomalies are extremely sensitive to disorder and, therefore, are a true coherence effect. By comparing the temperature dependence of various physical quantities to the predictions of the Anderson Impurity Model, the slow crossover behavior observed in YbAl{sub 3}, in which the data evolve from a low-temperature coherent, Fermi-liquid regime to a high temperature local moment regime more gradually than predicted by the Anderson Impurity Model, appears to evolve to fast crossover behavior at x {approx} 0.7 where the evolution is more rapid than predicted. These two phenomena found in Yb{sub 1-x}Lu{sub x}Al{sub 3}, i.e., the low-T anomalies and the slow/fast crossover behavior are discussed in relation to recent theories of the Anderson lattice.},
doi = {},
journal = {Physical Review B},
number = ,
volume = 69,
place = {United States},
year = {Mon Oct 06 00:00:00 EDT 2003},
month = {Mon Oct 06 00:00:00 EDT 2003}
}