Antisite defects in MnSb2Te4 drive a strong antiferromagnetic exchange (J' ≈ 0.75 meV) that produces an optical magnon and dominates the magnetic excitations.
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Defect-induced optical magnons and local magnetic correlations in MnSb2Te4
Antisite defects in MnSb2Te4 drive a strong antiferromagnetic exchange (J' ≈ 0.75 meV) that produces an optical magnon and dominates the magnetic excitations.