Magnetism of europium under extreme pressures
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Univ. of Illinois, Urbana-Champaign, IL (United States)
- Washington Univ., St. Louis, MO (United States); Washington State Univ., Pullman, WA (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Washington Univ., St. Louis, MO (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab.
- Chinese Academy of Sciences (CAS), Beijing (China). Inst. of High Energy Physics (IHEP)
- Washington Univ., St. Louis, MO (United States)
Using synchrotron-based Mossbauer and x-ray emission spectroscopies, we explore the evolution of magnetism in elemental (divalent) europium as it gives way to superconductivity at extreme pressures. Magnetic order in Eu is observed to collapse just above 80 GPa as superconductivity emerges, even though Eu cations retain their strong local 4f(7) magnetic moments up to 119 GPa with no evidence for an increase in valence. We speculate that superconductivity in Eu may be unconventional and have its origin in magnetic fluctuations, as has been suggested for high-T-c cuprates, heavy fermions, and iron-pnictides.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); Carnegie/DOE Alliance Center (CDAC); Consortium for Materials Properties Research in Earth Sciences (COMPRES); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC02-06CH11357; FC52-08NA28554
- OSTI ID:
- 1339554
- Alternate ID(s):
- OSTI ID: 1253931
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 93, Issue 18; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 15 works
Citation information provided by
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Web of Science
X-ray magnetic diffraction under high pressure
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journal | June 2019 |
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