DFT+U total-energy mapping over 60 magnetic configurations shows the in-plane exchange J2 in α-MnTe is ferromagnetic, and the direction-dependent J10 interaction produces chiral magnon splitting, both enhanced under 15 GPa pressure.
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Origin of $A$-type antiferromagnetism and chiral split magnons in altermagnetic $\alpha$-MnTe
DFT+U total-energy mapping over 60 magnetic configurations shows the in-plane exchange J2 in α-MnTe is ferromagnetic, and the direction-dependent J10 interaction produces chiral magnon splitting, both enhanced under 15 GPa pressure.