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Mode-resolved detection of magnetization dynamics using x-ray diffractive ferromagnetic resonance

DOI: 10.1021/acs.nanolett.9b03989 DOI Help

Authors: David M. Burn (Diamond Light Source) , Shilei Zhang (ShanghaiTech University) , Kun Zhai (Institute of Physics, Chinese Academy of Sciences; University of Chinese Academy of Sciences) , Yisheng Chai (Chongqing University) , Young Sun (Institute of Physics, Chinese Academy of Sciences; University of Chinese Academy of Sciences) , Gerrit Van Der Laan (Diamond Light Source) , Thorsten Hesjedal (University of Oxford)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nano Letters

State: Published (Approved)
Published: December 2019
Diamond Proposal Number(s): 18898

Open Access Open Access

Abstract: Collective spin excitations of ordered magnetic structures offer great potential for the development of novel spintronic devices. The present approach relies on micromagnetic models to explain the origins of dynamic modes observed by ferromagnetic resonance (FMR) studies, since experimental tools to directly reveal the origins of the complex dynamic behavior are lacking. Here we demonstrate a new approach which combines resonant magnetic X-ray diffraction with FMR, thereby allowing for a reconstruction of the real-space spin dynamics of the system. This new diffractive FMR technique builds on X-ray detected FMR that allows for element-selective dynamic studies, giving unique access to specific wave components of static and dynamic coupling in magnetic heterostructures. In combination with diffraction, FMR is elevated to the level of a modal spectroscopy technique, potentially opening new pathways for the development of spintronic devices.

Journal Keywords: Ferromagnetic resonance; multiferroics; topological spin texture; magnetic phase diagram; resonant elastic X-ray scattering

Subject Areas: Physics, Materials


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