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  • 1
    Electronic Resource
    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
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 19 (1991), S. 439-441 
    ISSN: 1434-6079
    Keywords: 36.40 + d ; 82.20 Wt ; 61.50Cj
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Structure and stability of carbon clusters in the size range 50≤n≤72 have been investigated by means of a semiempirical many body potential (Tersoff, J.: Phys. Rev. Lett.61, 2879 (1988)). The ground state geometries, identified by Monte Carlo Simulated Annealing, may be described as slightly distorted hollow spheres, with nearly graphitic atomic arrangement. Starting from these structures, we simulate by Molecular Dynamics a series of cluster-cluster collisions. The final aim of these computations is to simulate the deposition of carbon clusters produced in a molecular beam on a graphite surface. Our preliminary results indicate that at leastC 60 could survive the deposition process.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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