First-principles calculations for Gilbert damping constant at finite temperature

Ryoya Hiramatsu, Daisuke Miura, Akimasa Sakuma

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We propose a first-principles calculation method for the Gilbert damping constants α at finite temperature. α is described by the torque correlation model in which the electronic structure is computed by the tight-binding linear muffin-tin orbital method. We include the finite-temperature effect as the transverse spin fluctuation in the disordered local moment picture within the coherent potential approximation. Applying the present method to bcc-Fe and L10-FePt, we demonstrate this temperature-dependent α. By comparing our calculated results with experimental results, we find the calculated values are less than half of the experimental values, reflecting the characteristics of the torque correlation model.

Original languageEnglish
Article number013003
JournalApplied Physics Express
Issue number1
Publication statusPublished - 2022 Jan
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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