Abstract
The spin-wave dispersion relation for a cubic antiferromagnet is derived as a function of applied external stress and in the absence of an external magnetic field. It is shown that the presence of the stress serves to resolve the otherwise doubly degenerate antiferromagnetic resonance modes and an expression is obtained for the size of the splitting. The stress conditions at which the antiferromagnetic resonance modes soften are examined, and it is observed that, for small values of spin, the predicted stability of the system is limited in some cases by mode softening, even though the saturated spin-deviation reference state is stable for small variations in the directions of parallel spin alignment.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
