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arXiv · 2401.07610

Superconductivity in Breathing Kagome-Structured C14 Laves Phase XOs2(X = Zr, Hf)

P. K. Meena·M. Mandal·P. Manna·S. Srivastava·S. Sharma·P. Mishra·R. P. Singh
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Abstract

Recently, the emergence of superconductivity in kagome metals has generated significant interest due to its interaction with flat bands and topological electronic states, which exhibit a range of unusual quantum characteristics. This study thoroughly investigates largely unexplored breathing Kagome structure C14 laves phase compounds XOs$_{2}$ (X = Zr, Hf) by XRD, electrical transport, magnetization, and specific heat measurements. Our analyses confirm the presence of the MgZn$_{2}$-type structure in ZrOs$_{2}$ and HfOs$_{2}$ compounds, exhibiting type-II superconductivity with critical temperature (T$_{C}$) values of 2.90(3) K and 2.69(6) K, respectively. Furthermore, specific heat measurements and an electron-phonon coupling constant suggest the presence of weakly coupled BCS superconductivity in both compounds.

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P. K. Meena, M. Mandal, P. Manna, S. Srivastava, S. Sharma, P. Mishra, R. P. Singh. 2024-01-15. Superconductivity in Breathing Kagome-Structured C14 Laves Phase XOs2(X = Zr, Hf). https://arxiv.org/abs/2401.07610

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