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Element- and time-resolved measurements of spin dynamics using x-ray detected ferromagnetic resonance

Element- and time-resolved measurements of spin dynamics using x-ray detected ferromagnetic resonance

Authors :
Chanyong Hwang
P. Shafer
Thorsten Hesjedal
G. van der Laan
Alpha T. N'Diaye
Qian Li
Mengmeng Yang
Adriana I. Figueroa
D. M. Burn
Elke Arenholz
Ziqiang Qiu
Christoph Klewe
R. J. Hicken
J. Li
Source :
Synchrotron Radiation News, vol 33, iss 2
Publication Year :
2020
Publisher :
Taylor and Francis, 2020.

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 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.

Details

Language :
English
Database :
OpenAIRE
Journal :
Synchrotron Radiation News, vol 33, iss 2
Accession number :
edsair.doi.dedup.....2de23e64f7aaeddcf9d85e33a146cd84