Magnon-phonon interaction in antiferromagnetic two-dimensional MXenes
Ke Wang1,2, Hai Wang1, Gang Zhang2
1 Xidian University, No. 2 Taibai Road, Xi’an, Shaanxi Province 710071, China
2 Institute of High Performance Computing, A*STAR, Singapore 138632
Abstract
Antiferromagnetic material possesses excellent robustness to an external magnetic field perturbation, which makes it promising in application of spintronic devices. The magnon-phonon interaction plays a vital role in spintronic devices. In this work, we performed first-principles calculation to study the effect of magnon-phonon interaction on magnon spectra of the antiferromagnetic MXenes Cr2TiC2FCl, and calculated the phonon dominated magnon relaxation time based on the magnon spectra broadening. We find that relaxation time of optical magnons and acoustic magnons have quite different wavevector dependence. Our results about spin coupling to specific phonon polarizations can shed light on the understanding of magnon damping and energy dissipation in 2D antiferromagnetic materials.
Speaker
Ke Wang
Institute of High Performance Computing, A*STAR
Singapore
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