Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
87 (2000), S. 6800-6802
ISSN:
1089-7550
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
Magnetic impurities in metallic clusters having N≤6 atoms are investigated in the framework of the Anderson model by exact diagonalization methods. Parameters representative of the Kondo limit are considered. The spin gap ΔE=E(S=1,3/2)−E(S=0,1/2) shows a remarkable band-filling dependence that can be interpreted in terms of the cluster-specific conduction-electron spectrum. Finite-temperature properties are calculated exactly in the canonical ensemble. The specific heat Cp(T) and the impurity susceptibility χf(T) present characteristic peaks at temperatures of the order of TK(similar, equals)ΔE/kB [χf(T)∝1/T for T〉TK]. This is interpreted as a finite-size equivalent of the Kondo effect. The structural dependence is illustrated. © 2000 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.372846
Permalink
|
Standort |
Signatur |
Erwartet |
Verfügbarkeit |