"87" . "RIV/68378271:_____/13:00399801" . . "73755" . . "1"^^ . "Eloirdi, R." . . "Shick, Alexander" . . "Evidence for persistent spin fluctuations in uranium sesquicarbide"@en . "Physical Review. B" . "10.1103/PhysRevB.87.214414" . . . "Colineau, E." . . "RIV/68378271:_____/13:00399801!RIV14-GA0-68378271" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . . "[EDA4AF2FE63E]" . . "000320307700002" . "I, P(GAP204/10/0330)" . "1098-0121" . "21" . "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 and a 1\u03BAT2 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 structure calculations support the absence of a magnetically ordered ground state but suggest that dynamical spin fluctuations are responsible for the electron mass enhancement." . "Fuchs, A. J." . . . "Evidence for persistent spin fluctuations in uranium sesquicarbide"@en . "Caciuffo, R." . "Evidence for persistent spin fluctuations in uranium sesquicarbide" . . . "Evidence for persistent spin fluctuations in uranium sesquicarbide" . "Manara, D." . "7"^^ . . "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 and a 1\u03BAT2 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 structure calculations support the absence of a magnetically ordered ground state but suggest that dynamical spin fluctuations are responsible for the electron mass enhancement."@en . . "9"^^ . . "X-ray; magnetic susceptibility; scaling properties; carbides"@en . "Griveau, J. C." . . .