Evidence for persistent spin fluctuations in uranium sesquicarbide
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00399801" target="_blank" >RIV/68378271:_____/13:00399801 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.87.214414" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.87.214414</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.87.214414" target="_blank" >10.1103/PhysRevB.87.214414</a>
Alternative languages
Result language
angličtina
Original language name
Evidence for persistent spin fluctuations in uranium sesquicarbide
Original language description
The low-temperature magnetic susceptibility, heat capacity, and electrical resistivity of uranium sesquicarbide have been determined down to 2 K by combining measurements carried out on samples of U2C3, containing UC as minority phase, and on pure UC specimens. The presence of spin fluctuations with characteristic temperature TSF = 7 K is revealed by a nonanalytic contribution to the specific heat behaving (well below TSF) as T3ln(T/TSF), and confirmed by a T2 increase of the electrical resistivity anda 1?T2 decrease of the low-temperature magnetic susceptibility. The zero-temperature many-body enhancement of the electron mass is found to be m*/m 2.7. Our data rule out the occurrence of magnetic ordering in U2C3. First-principles electronic structurecalculations support the absence of a magnetically ordered ground state but suggest that dynamical spin fluctuations are responsible for the electron mass enhancement.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP204%2F10%2F0330" target="_blank" >GAP204/10/0330: Nanostructured actinide-based materials: Theory and experiment</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review. B
ISSN
1098-0121
e-ISSN
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Volume of the periodical
87
Issue of the periodical within the volume
21
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
"214414-1"-"214414-9"
UT code for WoS article
000320307700002
EID of the result in the Scopus database
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