In α-MnTe, an in-plane electron spin resonance mode at g=2.01 behaves as a pseudo-Goldstone mode, with linewidth set by the zone-center magnon population and an interaction constant Γ0/kB ≈ 27 mK.
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Pseudo-Goldstone mode in altermagnetic $\alpha$-MnTe: high-field electron spin resonance studies
In α-MnTe, an in-plane electron spin resonance mode at g=2.01 behaves as a pseudo-Goldstone mode, with linewidth set by the zone-center magnon population and an interaction constant Γ0/kB ≈ 27 mK.