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arXiv · 2510.12452

Possible high-Tc superconductivity at 45 K in the Ge-doped cluster Mott insulator GaNb4Se8

Ji-Hai Yuan·Ya-Dong Gu·Yun-Qing Shi·Hao-Yu He·Qing-Song Liu·Jun-Kun Yi·Le-Wei Chen·Zheng-Xin Lin·Jia-Sheng Liu·Meng Wang·Zhi-An Ren
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Abstract

The Ge-doped GaNb4Se8 polycrystalline samples were synthesized by solid-state reaction method. Zero resistance transitions were observed in one batch of samples with the highest onset superconducting Tc at 45 K. This discovery may demonstrate a new class of Nb-based high-Tc superconductors arising from doped Mott insulators.

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Ji-Hai Yuan, Ya-Dong Gu, Yun-Qing Shi, Hao-Yu He, Qing-Song Liu, Jun-Kun Yi, Le-Wei Chen, Zheng-Xin Lin, Jia-Sheng Liu, Meng Wang, Zhi-An Ren. 2025-10-14. Possible high-Tc superconductivity at 45 K in the Ge-doped cluster Mott insulator GaNb4Se8. https://arxiv.org/abs/2510.12452

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