Steady-state regime for low temperature parametric excitation of a one-dimensional spin system
A. A. ZvyaginPhysicotechnical Institute of Low Temperatures, Academy of Sciences, Ukrainian SSR, KharkovV. M. TsukernikPhysicotechnical Institute of Low Temperatures, Academy of Sciences, Ukrainian SSR, Kharkov
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We obtain the nonlinear response of a one-dimensional spin system to a longitudinal magnetic field varying in a harmonic fashion for times large in comparison with the relaxation time. It is shown that the parametric excitation process in this system takes place in a nonthreshold manner.
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