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Memorias de investigación
Research Publications in journals:
Kondo temperature and Heavy Fermion behavior in Yb1?xYxCuAl series of alloys
Year:2018
Research Areas
  • Magnetism
Information
Abstract
Results on x-ray diffraction, electrical resistivity, specific heat and magnetization on the Yb1?xYxCuAl series of compounds are reported. The electrical resistivity shows an evolution from Kondo lattice regime for x ? 0.6 to single impurity behavior for x = 0.8 and 0.94. The electronic coefficient ? shows values of Heavy Fermion systems along the series for 0 ?x < 1. From the dependence of ? (0) and ? upon Y substitution, an increase of 12% of the Kondo temperature (TK) for x = 0.8 alloy respect to the reference YbCuAl (x = 0) is estimated. This is further supported by the evolution of the temperature of the maximum in the magnetic contribution of the specific heat. The overall results can be explained by the increase of the hybridization as consequence of negative pressure effects obtained by the chemical substitution of Yb by Y, thus leading to the increase of TK.
International
Si
JCR
Si
Title
Physica B-Condensed Matter
ISBN
0921-4526
Impact factor JCR
1,386
Impact info
Datos JCR del año 2016
Volume
536
10.1016/j.physb.2017.09.096
Journal number
From page
176
To page
181
Month
MAYO
Ranking
Participants
  • Autor: Daniel Rojas Pupo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Acústica Arquitectónica
  • Departamento: Estructuras y Física de Edificación
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Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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