Identification of the Dominant Precession Damping Mechanism in Fe, Co, and Ni By First-Principles Calculations

K. Gilmore, Y.U. Idzerda, and M.D. Stiles

Physical Review Letters 99(2), 027204 (2007)

Abstract:

The Landau-Lifshitz equation reliably describes magnetization dynamics using a phenomenological treatment of damping. This paper presents first-principles calculations of the damping parameters for Fe, Co, and Ni that quantitatively agree with existing ferromagnetic resonance measurements. This agreement establishes the dominant damping mechanism for these systems and takes a significant step toward predicting and tailoring the damping constants of new materials.


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