Identification of the dominant precession damping mechanism in Fe, Co, and Ni by first-principles calculations
K. Gilmore (1, 2), Y. U. Idzerda (2), and M. D. Stiles (1) ((1), National Institute of Standards, Technology, Gaithersburg, MD, (2) Montana, State University, Bozeman, MT)
TL;DR
This paper uses first-principles calculations to identify the main damping mechanism in Fe, Co, and Ni, aligning with experimental data and advancing the prediction of magnetic damping in materials.
Contribution
It introduces a first-principles approach to determine the dominant damping mechanism in ferromagnetic metals, improving predictive capabilities.
Findings
Calculated damping parameters agree with experiments
Identified the dominant damping mechanism in Fe, Co, and Ni
Paved the way for predicting damping in new materials
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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