Element- and Time-Resolved Measurements of Spin Dynamics Using X-ray Detected Ferromagnetic Resonance
Klewe, C; Li, Q; Yang, M; et al.N’Diaye, AT; Burn, DM; Hesjedal, T; Figueroa, AI; Hwang, C; Li, J; Hicken, RJ; Shafer, P; Arenholz, E; van der Laan, G; Qiu, Z
Date: 5 April 2020
Journal
Synchrotron Radiation News
Publisher
Taylor & Francis
Publisher DOI
Abstract
The technique of x-ray detected ferromagnetic resonance (XFMR) represents an indispensable new tool in the
investigation of spin current effects in complex heterostructures, as it enables the observation of magnetization and
spin dynamics with element-, site-, and valence state-specificity. Here we give an overview of the development ...
The technique of x-ray detected ferromagnetic resonance (XFMR) represents an indispensable new tool in the
investigation of spin current effects in complex heterostructures, as it enables the observation of magnetization and
spin dynamics with element-, site-, and valence state-specificity. Here we give an overview of the development of XFMR
and characterize different approaches to measure spin dynamics using synchrotron radiation. We provide a detailed
description of the working principle of the technique and give an overview of recent work carried out at beamline 4.0.2
of the Advanced Light Source and beamline I10 of the Diamond Light Source using XFMR. Results from our latest
publications demonstrate the capabilities and sensitivity of the technique. Element- and phase-resolution provide
intriguing insights into the mechanisms of spin current propagation in multilayers, while the high sensitivity of XFMR
allows for detection of even miniscule signals. Most recently, the utilization of linearly polarized x-rays for XFMR and
the detection of XFMR by means of x-ray diffraction rather than x-ray absorption demonstrate two new capabilities in
the investigation of spin dynamics.
Physics and Astronomy
Faculty of Environment, Science and Economy
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