Origin of $A$-type antiferromagnetism and chiral split magnons in altermagnetic $\alpha$-MnTe

Mojtaba Alaei, Pawel Sobieszczyk, Andrzej Ptok +3

The origin of the $A$-type antiferromagnetic ordering, characterized by ferromagnetic layers coupling antiferromagnetically, in the prototype semiconductor altermagnet $\alpha$-MnTe has…