Abstract
We study acoustic solitons consisting of one longitudinal and two transverse components and propagating in the direction perpendicular to an external magnetic field in a crystal containing paramagnetic impurities of electron and nuclear spins. The coupling of the electron spin subsystem to the longitudinal sound allows making the velocity of the latter close to that of the transverse acoustic waves, which provides an effective interaction between all components of the elastic field by means of the nuclear spin subsystem. We derive a three-component system of material and reduced wave equations describing this process and construct its soliton solutions in the form of stationary and breather pulses. Based on them, we study the peculiarities of the dynamics of the elastic field components and reveal the differences from the two-component model. The existence of two families of breathers is an important distinctive feature of the considered case.
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Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 164, No. 2, pp. 222–242, August, 2010.
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Sazonov, S.V., Ustinov, N.V. Nonlinear transparency regimes for three-component acoustic pulses in a system of electron and nuclear spins. Theor Math Phys 164, 1016–1034 (2010). https://doi.org/10.1007/s11232-010-0082-7
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DOI: https://doi.org/10.1007/s11232-010-0082-7