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The effect of an external magnetic field pulse on a magnetically ordered system at low temperatures

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Zvyagin,  A. A.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Zvyagin, A. A. (2016). The effect of an external magnetic field pulse on a magnetically ordered system at low temperatures. Low Temperature Physics, 42(4), 286-289. doi:10.1063/1.4947600.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002A-D98D-D
Abstract
A theoretical study of how external magnetic field pulses affect the magnon system of a magnetically-ordered magnet. It is shown that for a magnetic system in which the projection of the total spin moment, parallel to the external magnetic field, is not conserved, the field pulse causes magnetization vibrations, related to pulse duration. The amplitude and frequency of these vibrations is non-linearly dependent on the amplitude of the field pulse and the relaxation parameters. In the case of a short field pulse, the change in magnetization it causes is proportional to the square of its duration. Published by AIP Publishing.