IFIR 05409
INSTITUTO DE FISICA DE ROSARIO
Unidad Ejecutora - UE
artículos
Título:
Two state behaviour of Kondo trimers
Autor/es:
M. E. TORIO; K. HALLBERG; C. R. PROETTO
Revista:
EUROPHYSICS LETTERS
Editorial:
EDP Sciences S.A., France - Società Italiana di Fisica, Italy
Referencias:
Lugar: Orsay- France; Año: 2006 vol. 73 p. 239 - 245
ISSN:
0295-5075
Resumen:
Abstract. – The electronic properties and spectroscopic features of a magnetic trimer with a Kondo-like coupling to a non-magnetic metallic substrate are analyzed at zero temperature. The substrate density of states is depressed in the trimer neighbourhood, being exactly zero at the substrate chemical potential. The size of the resonance strongly depends on the magnetic state of the trimer, and exhibits a two-state behavior. The geometrical dependence of these results agree qualitatively with recent experiments and could be reproduced in a triangular quantum dot arrangement.
