论文标题
在高压下，范德华的新出现的超导率PD3P2S8
Emergent superconductivity in van der Waals Kagome material Pd3P2S8 under high pressure
论文作者
论文摘要
已经提出了Kagome晶格系统来容纳丰富的物理学，该物理提供了一个出色的平台来探索异常的量子状态。在这里，我们报告了在压力下发现范德华材料PD3P2S8超导性的。对于那些压力，电阻率的温度依赖性从半导体样行为变为正常金属的压力，在PD3P2S8中观察到超导性。超导过渡温度TC随着施加的压力增加，在79.5 GPA时达到约6.83 K。我们的结果结合了高压XRD，拉曼光谱和理论计算，我们的结果表明，在PD3P2S8中高压引起的观察到的超导性与非晶相的形成密切相关，这是由于结构不稳定性是由于在压缩和S atems Atoms之间增强的结构耦合而导致的结构稳定性。
Kagome lattice systems have been proposed to host rich physics, which provide an excellent platform to explore unusual quantum states. Here, we report on the discovery of superconductivity in van der Waals material Pd3P2S8 under pressure. The superconductivity is observed in Pd3P2S8 for those pressures where the temperature dependence of the resistivity changes from a semiconducting-like behavior to that of a normal metal. The superconducting transition temperature Tc increases with applied pressure and reaches ~ 6.83 K at 79.5 GPa. Combining high-pressure XRD, Raman spectroscopy and theoretical calculations, our results demonstrate that the observed superconductivity induced by high pressure in Pd3P2S8 is closely related to the formation of amorphous phase, which results from the structural instability due to the enhanced coupling between interlayer Pd and S atoms upon compression.
