Pseudogap in elemental plutonium
Abstract
Electronic correlations associated with incipient magnetism have long been recognized as an important factor in stabilizing the largest atomic volume δ phase of plutonium, although their strength compared to those in the rare earths and neighboring actinides in the periodic table has largely remained a mystery. We show here using calorimetry measurements, together with prior detailed measurements of the phonon dispersion, that the 5f electrons of the δ phase reside in a pseudogapped state, accompanied by reductions in various physical properties below a characteristic temperature T* ≈ 100 K. The small characteristic energy scale of the pseudogapped state implies that the 5f electrons in plutonium are much closer to the threshold for localization and magnetic order than has been suggested by state-of-the-art electronic structure theory, revealing plutonium to be arguably the most strongly correlated of the elements.
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Univ. of Florida, Gainesville, FL (United States). National High Magnetic Field Lab. (MagLab)
- Sponsoring Org.:
- USDOE Office of Science (SC); USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)
- OSTI Identifier:
- 1874164
- Report Number(s):
- LA-UR-20-24656
Journal ID: ISSN 2469-9950; TRN: US2306644
- Grant/Contract Number:
- 89233218CNA000001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 105; Journal Issue: 4; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; density of states; electronic structure; Kondo effect; transport phenomena; magnetism; magnetic susceptibility
Citation Formats
Wartenbe, Mark, Tobash, Paul H., Singleton, John, Winter Stritzinger, Laurel Elaine, Richmond, Scott, and Harrison, Neil. Pseudogap in elemental plutonium. United States: N. p., 2022.
Web. doi:10.1103/physrevb.105.l041107.
Wartenbe, Mark, Tobash, Paul H., Singleton, John, Winter Stritzinger, Laurel Elaine, Richmond, Scott, & Harrison, Neil. Pseudogap in elemental plutonium. United States. https://doi.org/10.1103/physrevb.105.l041107
Wartenbe, Mark, Tobash, Paul H., Singleton, John, Winter Stritzinger, Laurel Elaine, Richmond, Scott, and Harrison, Neil. Thu .
"Pseudogap in elemental plutonium". United States. https://doi.org/10.1103/physrevb.105.l041107. https://www.osti.gov/servlets/purl/1874164.
@article{osti_1874164,
title = {Pseudogap in elemental plutonium},
author = {Wartenbe, Mark and Tobash, Paul H. and Singleton, John and Winter Stritzinger, Laurel Elaine and Richmond, Scott and Harrison, Neil},
abstractNote = {Electronic correlations associated with incipient magnetism have long been recognized as an important factor in stabilizing the largest atomic volume δ phase of plutonium, although their strength compared to those in the rare earths and neighboring actinides in the periodic table has largely remained a mystery. We show here using calorimetry measurements, together with prior detailed measurements of the phonon dispersion, that the 5f electrons of the δ phase reside in a pseudogapped state, accompanied by reductions in various physical properties below a characteristic temperature T* ≈ 100 K. The small characteristic energy scale of the pseudogapped state implies that the 5f electrons in plutonium are much closer to the threshold for localization and magnetic order than has been suggested by state-of-the-art electronic structure theory, revealing plutonium to be arguably the most strongly correlated of the elements.},
doi = {10.1103/physrevb.105.l041107},
journal = {Physical Review. B},
number = 4,
volume = 105,
place = {United States},
year = {Thu Jan 13 00:00:00 EST 2022},
month = {Thu Jan 13 00:00:00 EST 2022}
}
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