On the effect of nonresonance parallel pumping on ultrasound propagation in antiferromagnets
V. P. SeminozhenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov, and Physicotechnical Institute, Academy of Sciences of the Ukrainian SSR, DonetskV. L. SobolevPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov, and Physicotechnical Institute, Academy of Sciences of the Ukrainian SSR, Donetsk
ABI
Аннотация
It is shown that in easy-plane antiferromagnets, in which the sound velocity, c, is higher than the spin-wave velocity s, the ultrasound attenuation due to the phonon–magnon interaction can be negative in the presence of a nonresonance variable magnetic field parallel to the constant field.
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