Spin superradiance by magnetic nanomolecules and nanoclusters

Abstract

Spin dynamics of assemblies of magnetic nanomolecules and nanoclusters can be made coherent by inserting the sample into a coil of a resonant electric circuit. Coherence is organized through the arising feedback magnetic field of the coil. The coupling of a magnetic sample with a resonant circuit induces fast spin relaxation and coherent spin radiation, that is, superradiance. We consider spin dynamics described by a realistic Hamiltonian, typical of magnetic nanomolecules and nanoclusters. The role of magnetic anisotropy is studied. A special attention is paid to geometric effects related to the mutual orientation of the magnetic sample and resonator coil.

arXiv commentlatex file, 8 pages, 5 figures

References in corpus (10)

• Effects of symmetry breaking in finite quantum systems
• Nonlinear Spin Dynamics in Nuclear Magnets
• Origin of Pure Spin Superradiance
• Nonlinear spin relaxation in strongly nonequilibrium magnets
• Approach to equilbrium in nano-scale systems at finite temperatur
• Coherent spin relaxation in molecular magnets
• Coherent spin radiation by magnetic nanomolecules and nanoclusters
• Absence of spin superradiance in resonatorless magnets
• Spin superradiance versus atomic superradiance
• Coherent dynamics of radiating atomic systems in pseudospin representation