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Electronic Properties of Compact and Diluted Metal-Clusters by Impedance Spectroscopy

Published online by Cambridge University Press:  15 February 2011

U. Simon ,
G. Schmid  and
G. Schön
U. Simon
Affiliation:
Institut för Anorganische Chemie der Universitat-GH EssenUniversitätsstr. 5–7, 4300 Essen 1
G. Schmid
Affiliation:
Institut för Anorganische Chemie der Universitat-GH EssenUniversitätsstr. 5–7, 4300 Essen 1
G. Schön
Affiliation:
Institut för Anorganische Chemie der Universitat-GH EssenUniversitätsstr. 5–7, 4300 Essen 1
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Abstract

All presently published electrical and optical measurements on concentrated ligand stabilized Au55-cluster samples reveal an inter-cluster tunnel-conductivity and indicate the influence of a “quantum-size-effect” (QSE) [1],[2]. However these data do not show any initials for the separation of inter- and possible intracluster effects. In the present Raper electronic intra-cluster Properties such as the electrical “conductivity” of 1nm chemical auantum dots, their relaxation frequencies and the relevant activation enthalpies as well as the respective Properties of pairs of Au55-clusters have been investigated in comparison to diluted clusters and interpreted by means of Impedance Spectroscopy. Furthermore a method to determine the number and the density of states (DOS) in the metal-core from the measuring data by means of very simple quantum-size assumptions is presented, which is compatible with both the SIMIT[3] and the existing cluster models.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 272: Symposium O – Chemical Processes in Inorganic Materials: Metal and Semiconductor Clusters , 1992 , 167
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

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