Structural and Transport Properties of the Weyl Semimetal NbAs at High Pressure

• 作 者: 张骏 刘峰良 董金奎 徐杨 李娜娜 杨文革 李世燕
• 机 构: State Key Laboratory of Surface Physics,Department of Physics,and Laboratory of Advanced Materials,F
• 出 处: Chinese Physics Letters
• 发表日期: 2015年09期
• 关键词: superconductor applying topological synchrotron relativistic overlapping pairing

We perform a series of high-pressure synchrotron x-ray diffraction(XRD) and resistance measurements on the Weyl semimetal NhAs.The crystal structure remains stable up to 26 GPa according to the powder XRD data.The resistance of NbAs single crystal increases monotonically with pressure at low temperature.Up to 20 GPa,no superconducting transition is observed down to 0.3 K.These results show that the Weyl semimetal phase is robust in NbAs,and applying pressure may not be a good way to obtain a topoiogicaJ superconductor from Weyl semimetal NbAs.

We perform a series of high-pressure synchrotron x-ray diffraction (XRD) and resistance measurements on the Weyl semimetal NhAs. Crystal structure remains stable to 26 GPa according to the powder XRD data. The resistance of NbAs single crystal increases monotonically with pressure at low temperature. Up to 20 GPa, no superconducting transition is observed down to 0.3 K.These results show that the Weyl semimetal phase is robust in NbAs, and applying pressure may not be a good way to obtain a topoiogica J superconductor from Weyl semimetal NbAs.