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

We perform a series of high-pressure synchrotron x-ray diffraction （XRD） and resistance measurements on the Weyl semimetal NbAs. 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 temp...

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Published inChinese physics letters Vol. 32; no. 9; pp. 116 - 118
Main Author 张骏 刘峰良 董金奎 徐杨 李娜娜 杨文革 李世燕
Format Journal Article
LanguageEnglish
Published 01.09.2015
Subjects
Crystal structure
Diffraction
Metalloids
NBA
Superconductivity
Synchrotrons
Transport properties
X-ray diffraction
X-rays
半金属
单调增加
同步辐射X射线衍射
晶体结构
电阻测量
输运性质
高压力
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/32/9/097102

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Summary:We perform a series of high-pressure synchrotron x-ray diffraction （XRD） and resistance measurements on the Weyl semimetal NbAs. 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 topological superconductor from Weyl semimetal NbAs.
Bibliography:11-1959/O4
We perform a series of high-pressure synchrotron x-ray diffraction （XRD） and resistance measurements on the Weyl semimetal NbAs. 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 topological superconductor from Weyl semimetal NbAs.
ZHANG Jun, LIU Feng-Liang, DONG Jin-Kui, XU Yang, LI Na-Na, YANG Wen-Ge, LI Shi-Yan （1 State Key Laboratory of Surface Physics, Department of Physics, and Laboratory of Advanced Materials Fudan University, Shanghai 200433 2 Center for High Pressure Science and Technology Advanced Research, Shanghai 201203 a Collaborative Innovation Center of Advanced Microstructures, Pudan University, Shanghai 200433）
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/32/9/097102