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arXiv · 0706.2177

Physical properties of the noncentrosymmetric superconductor Mg_10Ir_19B_16

T. Klimczuk·F. Ronning·V. Sidorov·R. J. Cava·J. D. Thompson
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Abstract

Specific heat, electrical resistivity, and magnetic susceptibility measurements on a high quality sample of Mg10Ir19B16 provide a self-consistent determination of its superconducting properties. They indicate that Mg10Ir19B16 is a type-II superconductor (Tc=4.45K, k(0)=20), with an electron-phonon coupling constant l_ep=0.66. An analysis of the T-dependent specific heat shows that superconducting properties are dominated by an s-wave gap (D=0.7 meV). Point contact tunneling data provide evidence for multiple superconducting gaps, as expected from strong asymmetric spin-orbit coupling.

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T. Klimczuk, F. Ronning, V. Sidorov, R. J. Cava, J. D. Thompson. 2008-01-07. Physical properties of the noncentrosymmetric superconductor Mg_10Ir_19B_16. https://doi.org/10.1103/physrevlett.99.257004

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