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arXiv · 1308.4649

Superconductivity in the Mn5Si3-type Zr5Sb3 system

B. Lv·X. Y. Zhu·B. Lorenz·F. Y. Wei·Y. Y. Xue·Z. P. Yin·G. Kotliar·C. W. Chu
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Abstract

We report the discovery of superconductivity at 2.3 K in Zr5Sb3, the first superconducting member in the large compound family of the Mn5Si3-structure type. Transport, magnetic, and calorimetric measurements and band structure calculations show it to be a phonon-mediated BCS superconductor, with a relatively large density of states at the Fermi level associated with the d-electrons of Zr and substantially larger electron-phonon coupling compared to the Sn counterpart compound Zr5Sn3. More superconductors with even higher transition temperatures are expected to be found in this family of compounds.

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B. Lv, X. Y. Zhu, B. Lorenz, F. Y. Wei, Y. Y. Xue, Z. P. Yin, G. Kotliar, C. W. Chu. 2013-08-21. Superconductivity in the Mn5Si3-type Zr5Sb3 system. https://doi.org/10.1103/physrevb.88.134520

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