A micromagnetic theory of skyrmion lifetime in ultrathin ferromagnetic films

Anne Bernand-Mantel, Cyrill B. Muratov, Valeriy V. Slastikov

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We use the continuum micromagnetic framework to derive the formulas for compact skyrmion lifetime due to thermal noise in ultrathin ferromagnetic films with relatively weak interfacial Dzyaloshinskii-Moriya interaction. In the absence of a saddle point connecting the skyrmion solution to the ferromagnetic state, we interpret the skyrmion collapse event as “capture by an absorber” at microscale. This yields an explicit Arrhenius collapse rate with both the barrier height and the prefactor as functions of all the material parameters, as well as the dynamical paths to collapse.

Original languageEnglish (US)
Article numbere2122237119
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number29
StatePublished - Jul 19 2022

All Science Journal Classification (ASJC) codes

  • General


  • magnetic skyrmions
  • rare events
  • stochastic dynamics
  • topological protection


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