Electronic Resource
Springer
The European physical journal
19 (1991), S. 241-245
ISSN:
1434-6079
Keywords:
75.50.Bb
;
36.40. +d
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The Stern-Gerlach deflections of small alkali clusters (N〈6) and iron clusters (10〈N〈500) show that the paramagnetic alkali clusters always have a non-deflecting component, while the iron clusters always deflect in the high field direction. Both of these effects appear to be related to spin relaxation however in the case of alkali clusters it is shown that they are in fact caused by avoided level crossing in the Zeeman diagram. For alkali clusters the relatively weak couplings cause reduced magnetic moments where levels cross. For iron clusters however the total spin is strongly coupled to the molecular framework. Consequently this coupling is responsible for avoided level crossings which ultimately cause the total energy of the cluster to decrease with increasing magnetic field so that the iron clusters will deflect in one direction when introduced in an inhomogeneous magnetic field. Experiment and theory are discussed for both cases.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01448302
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