Nonlinear spin-wave theory with self-energy corrections and two-magnon bound-state resummation quantitatively matches CrBr3 magnon data up to Tc and finds thermally reduced but stable gaps in gapped Dirac materials like CrI3, with a ~5% DMI/exchange ratio criterion for observability.
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Fate of Topological Dirac Magnons in van der Waals Ferromagnets at Finite Temperature
Nonlinear spin-wave theory with self-energy corrections and two-magnon bound-state resummation quantitatively matches CrBr3 magnon data up to Tc and finds thermally reduced but stable gaps in gapped Dirac materials like CrI3, with a ~5% DMI/exchange ratio criterion for observability.