Spin superradiance by magnetic nanomolecules and nanoclusters

23rd International Laser Physics Workshop

Yukalov, V.I.^1 ; Henner, V.K.^2,3 ; Yukalova, E.P.^4

Bogolubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna

141980, Russia^1

Department of Physics, Perm State University, Perm

614190, Russia^2

Department of Physics, University of Louisville, Louisville

KY

40292, United States^3

Laboratory of Information Technologies, Joint Institute for Nuclear Research, Dubna

141980, Russia^4

关键词: Geometric effects;    Magnetic samples;    Mutual orientation;    Nano-molecules;    Spin relaxation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/594/1/012006/pdf
DOI  :  10.1088/1742-6596/594/1/012006

来源: IOP

【 摘 要 】

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.