论文标题
kagome单晶PD3P2S8中的压力诱导的超导性
Pressure-induced superconductivity in kagome single crystal Pd3P2S8
论文作者
论文摘要
Kagome Lattice为探索相关电子的异常量子状态提供了独特的机会。在这里，我们报告了当半导体到金属跃迁由压力驱动的kagome单晶PD3P2S8中超导性的观察。高压耐药性测量表明，在约11 GPA处同时观察到金属化和超导性。随着压力的增加，从2.6 K到52 GPA时的最大7.7 K单调增强了超导临界温度TC。有趣的是，当压力完全释放时，超导性将保留。 Synchrotron XRD和Raman实验始终证明超导性的出现伴随着无形化，而减压时超导性的保留性则可以归因于无形化的不可逆性。
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 ~52 GPa. Interestingly, superconductivity retains when the pressure is fully released. Synchrotron XRD 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.
