Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
87 (2000), S. 6800-6802
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.372846
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