Enhanced Gilbert Damping in Thin Ferromagnetic Films

Yaroslav Tserkovnyak, Arne Brataas, Gerrit E.W. Bauer

Research output: Contribution to journalArticlepeer-review

394 Citations (Scopus)


The precession of the magnetization of a ferromagnet is shown to transfer spins into adjacent normal metal layers. This “pumping” of spins slows down the precession corresponding to an enhanced Gilbert damping constant in the Landau-Lifshitz equation. The damping is expressed in terms of the scattering matrix of the ferromagnetic layer, which is accessible to model and first-principles calculations. Our estimates for permalloy thin films explain the trends observed in recent experiments.

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review Letters
Issue number11
Publication statusPublished - 2002


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