Pressure-induced superconductivity in the kagome single-crystal Pd3P2S8
Ying Zhou, Xinyi He, Shuyang Wang, Jing Wang, Xuliang Chen, Yonghui Zhou, Chao An, Min Zhang, Zhitao Zhang, Zhaorong Yang
DOI 10.1103/PhysRevB.106.104512 · Physical Review B
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Abstract
The kagome lattice offers unique opportunities for the exploration of unusual quantum states of correlated electrons. Here, we report on the observation of superconductivity in a kagome single-crystal Pd3P2S8 when a semiconducting-to-metallic transition is driven by pressure. High-pressure resistance measurements show that the metallization and superconductivity are simultaneously observed at about 11 GPa. With increasing pressure, the superconducting critical temperature Tc is monotonously enhanced from 2.6 K to a maximum 7.7 K at ∼52GPa. Interestingly, superconductivity is retained when the pressure is fully released. Synchrotron x-ray diffraction and Raman experiments consistently evidence that the emergence of superconductivity is accompanied with an amorphization, and the retainability of superconductivity upon decompression can be attributed to the irreversibility of the amorphization.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pd3P2S8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.6 | 11.7 GPa | onset |
| Pd3P2S8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.8 | 19.4 GPa | zero_resistance |
| Pd3P2S8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.7 | 52.2 GPa | onset |
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