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Electric dipole polarizabilities of isolated gallium arsenide clusters

✍ Scribed by S. Schlecht; R. Schäfer; J. Woenckhaus; J.A. Becker

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
475 KB
Volume
246
Category
Article
ISSN
0009-2614

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✦ Synopsis

The static electric dipole polarizabilities of isolated Ga,As, clusters with N + M = 4-30 atoms and approximatly 1 : 1 composition have been measured in dependence of the cluster size N + M by means of a molecular beam deflection technique. A striking size-dependent behaviour has been observed for small Ga,As, clusters with up to 15 atoms. Within this size range the polarizability oscillates strongly between low values for even and high values for odd numbers of atoms N + M. For clusters with N + M < 12 the polarizabiiity of gallium rich clusters is significantly larger than the values obtained for arsenic rich clusters whereas the opposite effect was observed for larger clusters with N + M > 12.

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