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arXiv · 2510.17081

Zero resistance when metals mixed with insulators

Ya-Dong Gu·Ji-Hai Yuan·Zhi-An Ren
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Abstract

A false zero resistance behavior was observed during our study on the search of superconductivity in Ge-doped GaNb4Se8. This zero resistance was proved to be caused by open-circuit in multi-phase samples comprised of metals and insulators by measuring with four-probe method. The evidence strongly suggests that the reported superconductivity in hydrides should be carefully re-checked.

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Ya-Dong Gu, Ji-Hai Yuan, Zhi-An Ren. 2025-10-20. Zero resistance when metals mixed with insulators. https://arxiv.org/abs/2510.17081

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