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Breakdown of the coherence effects and Fermi liquid behavior in YbAl3 nanoparticles

Abstract: A change in the Kondo lattice behavior of bulk YbAl3 has been observed when the alloy is shaped into nanoparticles (?12?nm). Measurements of the electrical resistivity show inhibited coherence effects and deviation from the standard Fermi liquid behavior (T 2-dependence). These results are interpreted as being due to the effect of the disruption of the periodicity of the array of Kondo ions provoked by the size reduction process. Additionally, the ensemble of randomly placed nanoparticles also triggers an extra source of electronic scattering at very low temperatures (?15?K) due to quantum interference effects.

 Autoría: Echevarria-Bonet C., Rojas D., Espeso J., Rodríguez Fernández J., Rodríguez Fernández L., Bauer E., Burdin S., Magalhães S., Fernández Barquín L.,

 Fuente: J. Phys.: Condens. Matter 30 (2018) 135604

Editorial: Institute of Physics

 Fecha de publicación: 08/03/2018

Nº de páginas: 8

Tipo de publicación: Artículo de Revista

DOI: 10.1088/1361-648X/aab0c7

ISSN: 0953-8984,1361-648X

Proyecto español: MAT2014-55049-C2-R

Url de la publicación: https://doi.org/10.1088/1361-648X/aab0c7

Autores/as

CRISTINA ECHEVARRIA BONET

DANIEL ROJAS PUPO

LIDIA RODRIGUEZ FERNANDEZ

BAUER, ERNST

BURDIN, SEBASTIEN

GARCÍA MAGALHÄES, SERGIO