Magnetism of europium under extreme pressures
Abstract
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.
- Authors:
-
- 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)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- 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)
- OSTI Identifier:
- 1339554
- Alternate Identifier(s):
- OSTI ID: 1253931
- Grant/Contract Number:
- AC02-06CH11357; FC52-08NA28554
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 18; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Bi, W., Lim, J., Fabbris, G., Zhao, J., Haskel, D., Alp, E. E., Hu, M. Y., Chow, P., Xiao, Y, Xu, W., and Schilling, J. S. Magnetism of europium under extreme pressures. United States: N. p., 2016.
Web. doi:10.1103/PhysRevB.93.184424.
Bi, W., Lim, J., Fabbris, G., Zhao, J., Haskel, D., Alp, E. E., Hu, M. Y., Chow, P., Xiao, Y, Xu, W., & Schilling, J. S. Magnetism of europium under extreme pressures. United States. https://doi.org/10.1103/PhysRevB.93.184424
Bi, W., Lim, J., Fabbris, G., Zhao, J., Haskel, D., Alp, E. E., Hu, M. Y., Chow, P., Xiao, Y, Xu, W., and Schilling, J. S. Thu .
"Magnetism of europium under extreme pressures". United States. https://doi.org/10.1103/PhysRevB.93.184424. https://www.osti.gov/servlets/purl/1339554.
@article{osti_1339554,
title = {Magnetism of europium under extreme pressures},
author = {Bi, W. and Lim, J. and Fabbris, G. and Zhao, J. and Haskel, D. and Alp, E. E. and Hu, M. Y. and Chow, P. and Xiao, Y and Xu, W. and Schilling, J. S.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.93.184424},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 18,
volume = 93,
place = {United States},
year = {Thu May 19 00:00:00 EDT 2016},
month = {Thu May 19 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
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