A novel TDDFT-KKR scheme computes magnon dispersions and lifetimes in non-collinear Mn3Rh, finding three linear Goldstone modes whose Landau damping varies strongly with chirality due to the altermagnetic Stoner continuum.
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Dispersion and lifetimes of magnons in non-collinear magnets from time dependent density functional theory
A novel TDDFT-KKR scheme computes magnon dispersions and lifetimes in non-collinear Mn3Rh, finding three linear Goldstone modes whose Landau damping varies strongly with chirality due to the altermagnetic Stoner continuum.