Dzyaloshinskii-Moriya interaction induced extrinsic linewidth broadening of ferromagnetic resonance

2017/11/07 by Jung Hyun Oh, Ik-Sun Hong, Kyung‐Jin Lee +1
Materials Science · Physics and Astronomy · #Condensed matter physics #Copper Interconnects and Reliability #Dispersion (optics) #Ferromagnetic resonance #Ferromagnetism #Laser linewidth #Magnetic field #Magnetic properties of thin films #Magnetization #Magnon #Materials science #Physics #Quantum #Quantum mechanics #Resonance (particle physics) #ZnO doping and properties #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevb.97.014430

published as Phys. Rev. B 97, 014430 (2018) · 9 pages, 5 figures

arxiv created 2017/11/07 · openalex publication_date 2018/01/24 · arxiv updated 2018/01/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

For a thin ferromagnetic film with the Dzyaloshinskii-Moriya interaction (DMI), we derive an expression of the extrinsic ferromagnetic resonance (FMR) linewidth in a quantum-mechanical way, taking into account scatterings from structural inhomogeneity. In the presence of the DMI, the magnon dispersion exhibits rich resonant states, especially in small external magnetic fields and strong DMI strength. It is found that the FMR linewidth shows several characteristic features such as a finite linewidth at zero frequency and peaks in the low-frequency range.

Citations

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