Coherent spin radiation by magnetic nanomolecules and nanoclusters

Details Coherent spin radiation by magnetic nanomolecules and nanoclusters Coherent spin radiation by magnetic nanomolecules and nanoclusters

2008-10-27

arxiv.org/abs/0810.4822v1

Laser Phys. Lett. 5 (2008) 887-893

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Latex file, 11 figures

Scientific paper

The peculiarities of coherent spin radiation by magnetic nanomolecules is investigated by means of numerical simulation. The consideration is based on a microscopic Hamiltonian taking into account realistic dipole interactions. Superradiance can be realized only when the molecular sample is coupled to a resonant electric circuit. The feedback mechanism allows for the achievement of a fast spin reversal time and large radiation intensity. The influence on the level of radiation, caused by sample shape and orientation, is analysed. The most powerful coherent radiation is found to occur for an elongated sample directed along the resonator magnetic field.

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