Pressure-Induced Superconductivity in PdTeI with Quasi-One-Dimensional PdTe Chains
Yi Zhao,
Jun Hou,
Yang Fu,
Cuiying Pei,
Jianping Sun,
Qi Wang,
Lingling Gao,
Weizheng Cao,
Changhua Li,
Shihao Zhu,
Mingxin Zhang,
Yulin Chen,
Hechang Lei,
Jinguang Cheng,
Yanpeng Qi
Affiliations
Yi Zhao
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Jun Hou
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Yang Fu
Laboratory for Neutron Scattering, Beijing Key Laboratory of Opto-Electronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing 100872, China
Cuiying Pei
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Jianping Sun
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Qi Wang
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Lingling Gao
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Weizheng Cao
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Changhua Li
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Shihao Zhu
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Mingxin Zhang
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Yulin Chen
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
Hechang Lei
Laboratory for Neutron Scattering, Beijing Key Laboratory of Opto-Electronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing 100872, China
Jinguang Cheng
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Yanpeng Qi
School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
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, the resistivity dropping is observed approximately ~15 GPa and 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.
