论文标题
用准二维PDTE链中的PDTEI中的压力诱导的超导性
Pressure-induced superconductivity in PdTeI with quasi-one-dimensional PdTe chains
论文作者
论文摘要
准二维材料PDTEI在环境压力下表现出异常的电子传输性能。在这里，我们通过电气传输，同步加速器X射线衍射（XRD）和拉曼光谱测量的结合，系统地研究了PDTEI对外部压力的结构和电子响应。 PDTEI中的电荷密度波（CDW）顺序易碎，并且随着外部压力的应用，TCDW的过渡温度TCDW迅速降低。当压力增加到1 GPA时，电阻率驼峰是不明智的。进一步压缩后，将零电阻建立在20 GPA以上，表明超导性的发生。 XRD和拉曼数据的组合证据表明，超导性的出现伴随着压力诱导的PDTEI的非晶化。
The quasi-one-dimensional material PdTeI exhibits unusual electronic transport properties at ambient pressure. Here, we systematically investigate both the structural and electronic responses of PdTeI to external pressure, through a combination of electrical transport, synchrotron x-ray diffraction (XRD), and Raman spectroscopy measurements. The charge density wave (CDW) order in PdTeI is fragile and the transition temperature TCDW decreases rapidly with the application of external pressure. The resistivity hump is indiscernible when the pressure is increased to 1 GPa. Upon further compression, zero resistance is established above 20 GPa, suggesting the occurrence of superconductivity. Combined XRD and Raman data evidence that the emergence of superconductivity is accompanied by a pressure-induced amorphization of PdTeI.
