Nonlinear Dynamics of Nuclear-Electronic Spin Processes in Ferromagnets

Details Nonlinear Dynamics of Nuclear-Electronic Spin Processes in Ferromagnets Nonlinear Dynamics of Nuclear-Electronic Spin Processes in Ferromagnets

1999-08-04

arxiv.org/abs/cond-mat/9908072v1

J. Appl. Phys. 85 (1999) 5627-5629

Physics

Condensed Matter

1 file, 4 pages, RevTex, no figures

Scientific paper

10.1063/1.369820

Spin dynamics is considered in ferromagnets consisting of electron and nuclear subsystems interacting with each other through hyperfine forces. In addition, the ferromagnetic sample is coupled with a resonance electric circuit. Under these conditions, spin relaxation from a strongly nonequilibrium initial state displays several peculiarities absent for the standard set-up in studying spin relaxation. The main feature of the nonlinear spin dynamics considered in this communication is the appearance of ultrafast coherent relaxation, with characteristic relaxation times several orders shorter than the transverse relaxation time $T_2$. This type of coherent spin relaxation can be used for extracting additional information on the intrinsic properties of ferromagnetic materials and also can be employed for different technical applications.

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