Orbital Magnetic Dipole Mode in Deformed Clusters: A Fully Microscopic Analysis

Details Orbital Magnetic Dipole Mode in Deformed Clusters: A Fully Microscopic Analysis Orbital Magnetic Dipole Mode in Deformed Clusters: A Fully Microscopic Analysis

1999-03-30

arxiv.org/abs/physics/9903049v2

Physics

Atomic and Molecular Clusters

10 pages, 3 Postscript figures, uses revtex

Scientific paper

10.1103/PhysRevLett.83.57

The orbital M1 collective mode predicted for deformed clusters in a schematic model is studied in a self-consistent random-phase-approximation approach which fully exploits the shell structure of the clusters. The microscopic mechanism of the excitation is clarified and the close correlation with E2 mode established. The study shows that the M1 strength of the mode is fragmented over a large energy interval. In spite of that, the fraction remaining at low energy, well below the overwhelming dipole plasmon resonance, is comparable to the strength predicted in the schematic model. The importance of this result in view of future experiments is stressed.

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