Kondo temperature and Heavy Fermion behavior in Yb1−xYxCuAl series of alloys

Rojas Pupo, Daniel; Gandra, F.G.; Medina, A.N.; Fernández Barquín, L. y Gómez Sal, J.C. (2017). Kondo temperature and Heavy Fermion behavior in Yb1−xYxCuAl series of alloys. "Physica B: Condensed Matter" ; ISSN 0921-4526. https://doi.org/10.1016/j.physb.2017.09.096.

Descripción

Título: Kondo temperature and Heavy Fermion behavior in Yb1−xYxCuAl series of alloys
Autor/es:
  • Rojas Pupo, Daniel
  • Gandra, F.G.
  • Medina, A.N.
  • Fernández Barquín, L.
  • Gómez Sal, J.C.
Tipo de Documento: Artículo
Título de Revista/Publicación: Physica B: Condensed Matter
Fecha: Septiembre 2017
Materias:
Palabras Clave Informales: Yb alloys; Intermediate valence; Heavy fermion; Kondo temperature; Electrical resistivity; Specific heat;
Escuela: E.T.S. Arquitectura (UPM)
Departamento: Estructuras y Física de Edificación
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

We report, in the present article, a detailed study of the chemical substitution effects on the magnetic, electronic transport and thermal properties of the intermediate valence system YbCuAl (Yb 1-xYxCuAl series of alloys). A more complete characterization of this series of alloys is provided including the analysis of the thermal and electronic transport properties. It is worth noticing, that less attention has been paid to experimental evidences of the ?negative pressure? effects, within right side of the Doniach diagram, when the systems move away from the QCP. Thus, it is worthwhile to explore the region of higher hybridization states, when some theoretical works point even, to the existence of anomalous Kondo behaviours. The results of this study are explained by the increase of the hybridization as consequence of the negative pressure effects, obtained by the chemical substitution of Yb by Y, thus leading to the increase of TK, in agreement with the Doniach diagram. We think that the subject of this study will be of great interest for both, the readers interested in the properties of Strongly Correlated Electron materials, and those others who work on the also vast field of Rare-Earth intermetallics

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Gobierno de EspañaMAT2014- 55049-C2-RSin especificarSin especificarSin especificar

Más información

ID de Registro: 49410
Identificador DC: http://oa.upm.es/49410/
Identificador OAI: oai:oa.upm.es:49410
Identificador DOI: 10.1016/j.physb.2017.09.096
URL Oficial: https://www.sciencedirect.com/science/article/pii/S0921452617306919?via%3Dihub
Depositado por: Memoria Investigacion
Depositado el: 13 Feb 2018 08:17
Ultima Modificación: 13 Feb 2018 08:17
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