Probing -state configurations in with U -edge resonant x-ray emission spectroscopy
Journal Article
·
· Physical Review B
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Australian National Univ., Canberra (Australia)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Wisconsin-Oshkosh, WI (United States)
- National High Magnetic Field Lab., Tallahassee, FL (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States); Center for High Pressure Science & Technology Advanced Research, Shanghai (People's Republic of China)
Resonant x-ray emission spectroscopy (RXES) was employed at the U LIII absorption edge and the Lα1 emission line to explore the 5f occupancy, nf, and the degree of 5f-orbital delocalization in the hidden-order compound URu2Si2. By comparing to suitable reference materials such as UF4, UCd11, and α-U, we conclude that the 5f orbital in URu2Si2 is at least partially delocalized with nf=2.87±0.08, and does not change with temperature down to 10 K within the estimated error. These results place further constraints on theoretical explanations of the hidden order, especially those requiring a localized f2 ground state.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC02-05CH11231; AC52-07NA27344; AC02-76SF00515
- OSTI ID:
- 1379516
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: 4 Vol. 94; ISSN 2469-9950; ISSN PRBMDO
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Hidden order and beyond: an experimental—theoretical overview of the multifaceted behavior of URu 2 Si 2
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journal | January 2020 |
Distinct magnetic spectra in the hidden order and antiferromagnetic phases in URu 2 − x Fe x Si 2
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journal | November 2016 |
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