Altermagnetism is a newly discovered magnetic class named after the alternating spin polarizations in both real and reciprocal spaces. Like the spin-splitting of electronic bands, the magnon bands in altermagnets are predicted to exhibit alternating chiral splitting. In this work, by performing inelastic neutron scattering on α-MnTe, we directly verified the chiral splitting in altermagnetic magnon dispersions. The lifted degeneracy of chirality is further explained by a symmetric-exchange origin. In addition, the g-wave magnetism was identified in MnTe.
@article{arxiv.2408.16490,
title = {Chiral-Split Magnon in Altermagnetic MnTe},
author = {Zheyuan Liu and Makoto Ozeki and Shinichiro Asai and Shinichi Itoh and Takatsugu Masuda},
journal= {arXiv preprint arXiv:2408.16490},
year = {2024}
}
Comments
6 pages, 3 figures. To appear in Phys. Rev. Lett. This is the initial manuscript that was submitted to Phys. Rev. Lett