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Title: Exploring itinerant states in divalent hexaborides using rare-earth L edge resonant inelastic x-ray scattering

Abstract

We present a study of resonant inelastic x-ray scattering (RIXS) spectra collected at the rare-earth L edges of divalent hexaborides YbB6 and EuB6. In both systems, RIXS-active features are observed at two distinct resonances separated by ~10 eV in incident energy, with angle-dependence suggestive of distinct photon scattering processes. RIXS spectra collected at the divalent absorption peak resemble the unoccupied 5d density of states calculated using density functional theory. We discuss possible origins of this correspondence including a scenario which changes the 4f valence. In addition, anomalous resonant scattering is observed at higher incident energy, where no corresponding absorption feature is present. Our results demonstrate the potential for L-edge RIXS to assess the itinerant-state properties of -electron materials.

Authors:
ORCiD logo [1];  [2];  [3];  [3];  [3];  [3];  [4];  [5]; ORCiD logo [6];  [7];  [7];  [6]; ORCiD logo [1]
  1. Univ. of Connecticut, Storrs, CT (United States)
  2. Univ. of Connecticut, Storrs, CT (United States); Dartmouth College, Hanover, NH (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Univ. of California, Irvine, CA (United States)
  5. Kent State Univ., Kent, OH (United States)
  6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  7. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC). Basic Energy Sciences (BES); Swiss National Science Foundation (SNSF); National Science Foundation (NSF)
OSTI Identifier:
1659181
Alternate Identifier(s):
OSTI ID: 1775520
Report Number(s):
LA-UR-19-23023
Journal ID: ISSN 0953-8984; TRN: US2203398
Grant/Contract Number:  
89233218CNA000001; SC0016481; AC02-06CH11357; NSF-DMR-1506547
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 32; Journal Issue: 13; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; RIXS; correlated electron system; resonant inelastic x-ray scattering

Citation Formats

Sheets, Donal, Flynn, Vincent, Kim, Jungho, Upton, Mary, Casa, Diego, Gog, Thomas, Fisk, Zachary, Dzero, Maxim, Rosa, Priscila S., Mazzone, Daniel G., Jarrige, Ignace, Zhu, Jian-Xin, and Hancock, Jason. Exploring itinerant states in divalent hexaborides using rare-earth L edge resonant inelastic x-ray scattering. United States: N. p., 2019. Web. doi:10.1088/1361-648x/ab5e0f.
Sheets, Donal, Flynn, Vincent, Kim, Jungho, Upton, Mary, Casa, Diego, Gog, Thomas, Fisk, Zachary, Dzero, Maxim, Rosa, Priscila S., Mazzone, Daniel G., Jarrige, Ignace, Zhu, Jian-Xin, & Hancock, Jason. Exploring itinerant states in divalent hexaborides using rare-earth L edge resonant inelastic x-ray scattering. United States. https://doi.org/10.1088/1361-648x/ab5e0f
Sheets, Donal, Flynn, Vincent, Kim, Jungho, Upton, Mary, Casa, Diego, Gog, Thomas, Fisk, Zachary, Dzero, Maxim, Rosa, Priscila S., Mazzone, Daniel G., Jarrige, Ignace, Zhu, Jian-Xin, and Hancock, Jason. Mon . "Exploring itinerant states in divalent hexaborides using rare-earth L edge resonant inelastic x-ray scattering". United States. https://doi.org/10.1088/1361-648x/ab5e0f. https://www.osti.gov/servlets/purl/1659181.
@article{osti_1659181,
title = {Exploring itinerant states in divalent hexaborides using rare-earth L edge resonant inelastic x-ray scattering},
author = {Sheets, Donal and Flynn, Vincent and Kim, Jungho and Upton, Mary and Casa, Diego and Gog, Thomas and Fisk, Zachary and Dzero, Maxim and Rosa, Priscila S. and Mazzone, Daniel G. and Jarrige, Ignace and Zhu, Jian-Xin and Hancock, Jason},
abstractNote = {We present a study of resonant inelastic x-ray scattering (RIXS) spectra collected at the rare-earth L edges of divalent hexaborides YbB6 and EuB6. In both systems, RIXS-active features are observed at two distinct resonances separated by ~10 eV in incident energy, with angle-dependence suggestive of distinct photon scattering processes. RIXS spectra collected at the divalent absorption peak resemble the unoccupied 5d density of states calculated using density functional theory. We discuss possible origins of this correspondence including a scenario which changes the 4f valence. In addition, anomalous resonant scattering is observed at higher incident energy, where no corresponding absorption feature is present. Our results demonstrate the potential for L-edge RIXS to assess the itinerant-state properties of -electron materials.},
doi = {10.1088/1361-648x/ab5e0f},
journal = {Journal of Physics. Condensed Matter},
number = 13,
volume = 32,
place = {United States},
year = {Mon Dec 30 00:00:00 EST 2019},
month = {Mon Dec 30 00:00:00 EST 2019}
}

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