PMID:18233551

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Citation

Klimczuk, T, Ronning, F, Sidorov, V, Cava, RJ and Thompson, JD (2007) Physical properties of the noncentrosymmetric superconductor Mg10Ir19B16. Phys. Rev. Lett. 99:257004

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 [T{C}=4.45 K, kappa(0) approximately 20], with an electron-phonon coupling constant lambda{ep}=0.66. An analysis of the T-dependent specific heat shows that superconducting properties are dominated by an s-wave gap (Delta=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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