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

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【Author】 ZHANG Jun;LIU Feng-Liang;DONG Jin-Kui;XU Yang;LI Na-Na;YANG Wen-Ge;LI Shi-Yan;State Key Laboratory of Surface Physics,Department of Physics,and Laboratory of Advanced Materials,Fudan University;Center for High Pressure Science and Technology Advanced Research;Collaborative Innovation Center of Advanced Microstructures,Fudan University;

【机构】 State Key Laboratory of Surface Physics,Department of Physics,and Laboratory of Advanced Materials,Fudan University； Center for High Pressure Science and Technology Advanced Research； Collaborative Innovation Center of Advanced Microstructures,Fudan University；

【摘要】 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.更多还原

【Abstract】 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.更多还原

【基金】 Supported by the National Natural Science Foundation of China under Grant Nos 11422429 and 11421404;the National Basic Research Program of China under Grant Nos 2012CB821402 and 2015CB921401;the China Postdoctoral Science Foundation under Grant No 2014M560288;the Program for Professor of Special Appointment(Eastern Scholar) at Shanghai Institutions of Higher Learning;the Science and Technology Commission of Shanghai Municipality of China under Grant No 15XD1500200;HPCAT operations are supported by DOE-NNSA under Award No DE-NA0001974;DOE-BES under Award No DE-FG02-99ER45775;partial instrumentation funding by NSF

【文献出处】 Chinese Physics Letters ,中国物理快报(英文版) , 编辑部邮箱 ,2015年09期

【分类号】O614.512
【下载频次】20

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