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Title: Quartz-based flat-crystal resonant inelastic x-ray scattering spectrometer with sub-10 meV energy resolution

Abstract

Continued improvement of the energy resolution of resonant inelastic x-ray scattering (RIXS) spectrometers is crucial for fulfilling the potential of this technique in the study of electron dynamics in materials of fundamental and technological importance. In particular, RIXS is the only alternative tool to inelastic neutron scattering capable of providing fully momentum resolved information on dynamic spin structures of magnetic materials, but is limited to systems whose magnetic excitation energy scales are comparable to the energy resolution. The state-of-the-art spherical diced crystal analyzer optics provides energy resolution as good as 25 meV but has already reached its theoretical limit. For this study, we demonstrate a novel sub-10 meV RIXS spectrometer based on flat-crystal optics at the Ir-L3 absorption edge (11.215 keV) that achieves an analyzer energy resolution of 3.9 meV, very close to the theoretical value of 3.7 meV. In addition, the new spectrometer allows efficient polarization analysis without loss of energy resolution. The performance of the instrument is emonstrated using longitudinal acoustical and optical phonons in diamond, and magnon in Sr 3Ir 2O 7. The novel sub-10 meV RIXS spectrometer thus provides a window into magnetic materials with small energy scales.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1]
  1. Argonne National Lab. (ANL), Lemont, IL (United States). Advanced Photon Source (APS)
  2. Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of). Dept. of Physics; Inst. for Basic Science (IBS), Pohang (Korea, Republic of). Center for Artificial Low Dimensional Electronic Systems; Max Planck Inst. for Solid State Research, Stuttgart (Germany)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
OSTI Identifier:
1426719
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 36 MATERIALS SCIENCE; Quartz; Resonant inelstic x-ray scattering; Characterization and analytical techniques; Magnetic properties and materials

Citation Formats

Kim, Jungho, Casa, D., Said, Ayman, Krakora, Rich, Kim, B. J., Kasman, Elina, Huang, Xianrong, and Gog, T. Quartz-based flat-crystal resonant inelastic x-ray scattering spectrometer with sub-10 meV energy resolution. United States: N. p., 2018. Web. doi:10.1038/s41598-018-20396-z.
Kim, Jungho, Casa, D., Said, Ayman, Krakora, Rich, Kim, B. J., Kasman, Elina, Huang, Xianrong, & Gog, T. Quartz-based flat-crystal resonant inelastic x-ray scattering spectrometer with sub-10 meV energy resolution. United States. doi:10.1038/s41598-018-20396-z.
Kim, Jungho, Casa, D., Said, Ayman, Krakora, Rich, Kim, B. J., Kasman, Elina, Huang, Xianrong, and Gog, T. Wed . "Quartz-based flat-crystal resonant inelastic x-ray scattering spectrometer with sub-10 meV energy resolution". United States. doi:10.1038/s41598-018-20396-z. https://www.osti.gov/servlets/purl/1426719.
@article{osti_1426719,
title = {Quartz-based flat-crystal resonant inelastic x-ray scattering spectrometer with sub-10 meV energy resolution},
author = {Kim, Jungho and Casa, D. and Said, Ayman and Krakora, Rich and Kim, B. J. and Kasman, Elina and Huang, Xianrong and Gog, T.},
abstractNote = {Continued improvement of the energy resolution of resonant inelastic x-ray scattering (RIXS) spectrometers is crucial for fulfilling the potential of this technique in the study of electron dynamics in materials of fundamental and technological importance. In particular, RIXS is the only alternative tool to inelastic neutron scattering capable of providing fully momentum resolved information on dynamic spin structures of magnetic materials, but is limited to systems whose magnetic excitation energy scales are comparable to the energy resolution. The state-of-the-art spherical diced crystal analyzer optics provides energy resolution as good as 25 meV but has already reached its theoretical limit. For this study, we demonstrate a novel sub-10 meV RIXS spectrometer based on flat-crystal optics at the Ir-L3 absorption edge (11.215 keV) that achieves an analyzer energy resolution of 3.9 meV, very close to the theoretical value of 3.7 meV. In addition, the new spectrometer allows efficient polarization analysis without loss of energy resolution. The performance of the instrument is emonstrated using longitudinal acoustical and optical phonons in diamond, and magnon in Sr3Ir2O7. The novel sub-10 meV RIXS spectrometer thus provides a window into magnetic materials with small energy scales.},
doi = {10.1038/s41598-018-20396-z},
journal = {Scientific Reports},
number = 1,
volume = 8,
place = {United States},
year = {2018},
month = {1}
}

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