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Superconducting properties and electronic structure of NaBi

Author(s): Kushwaha, SK; Krizan, JW; Xiong, J; Klimczuk, T; Gibson, QD; et al

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Abstract: Resistivity, dc magnetization, and heat capacity measurements are reported for superconducting NaBi. T-c, the electronic contribution to the specific heat gamma, the Delta C-p/gamma T-c ratio, and the Debye temperature are found to be 2.15 K, 3.4 mJ mol(-1) K-2, 0.78, and 140 K respectively. The calculated electron-phonon coupling constant (lambda(ep) = 0.62) implies that NaBi is a moderately coupled superconductor. The upper critical field and coherence length are found to be 250Oe and 115nm, respectively. Electronic structure calculations show NaBi to be a good metal, in agreement with the experiments; the p(x) and p(y) orbitals of Bi dominate the electronic states at the Fermi Energy.
Publication Date: 28-May-2014
Electronic Publication Date: 8-May-2014
Citation: Kushwaha, SK, Krizan, JW, Xiong, J, Klimczuk, T, Gibson, QD, Liang, T, Ong, NP, Cava, RJ. (2014). Superconducting properties and electronic structure of NaBi. JOURNAL OF PHYSICS-CONDENSED MATTER, 26 (10.1088/0953-8984/26/21/212201
DOI: doi:10.1088/0953-8984/26/21/212201
ISSN: 0953-8984
EISSN: 1361-648X
Type of Material: Journal Article
Version: Author's manuscript

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