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- W2011447136 abstract "Measurements of the superconducting- and normal-state heat capacity of ${mathrm{U}}_{6}$X (Xensuremath{equiv}Mn, Fe, Co, Ni) compounds have been performed over a temperature range 1 Kensuremath{lesssim}Tensuremath{lesssim}35 K. The ${mathrm{U}}_{6}$X compounds have strong renormalizations of the free-carrier effective mass ${m}^{mathrm{*}}$ in the range 10${m}_{e}$ensuremath{lesssim}${m}^{mathrm{*}}$ensuremath{lesssim}50${m}_{e}$ (${m}_{e}$ensuremath{equiv}free-electron mass). The unusual magnitude and temperature dependence of the ${mathrm{U}}_{6}$X heat capacities suggest the presence of high densities of low-energy excitations of undetermined nature. The results are analyzed in terms of models appropriate to heavy-fermion liquids, and anisotropic or strong-coupled superconductors. The ${mathrm{U}}_{6}$X compounds form a link between relatively low-${m}^{mathrm{*}}$, high-transition-temperature A15 compounds and the more extreme examples of heavy-fermion superconductors such as ${mathrm{UBe}}_{13}$, ${mathrm{UPt}}_{3}$, and ${mathrm{CeCuSi}}_{2}$ for which ${m}^{mathrm{*}}$ensuremath{sim}${10}^{2}$${m}_{e}$. .AE" @default.
- W2011447136 created "2016-06-24" @default.
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- W2011447136 date "1989-01-01" @default.
- W2011447136 modified "2023-09-28" @default.
- W2011447136 title "Low-temperature heat-capacity study of the<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>U</mml:mi></mml:mrow><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>X (<i>X≡</i>Mn, Fe, Co, Ni) compounds" @default.
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- W2011447136 doi "https://doi.org/10.1103/physrevb.39.151" @default.
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