Physical properties and phase diagram of NaFe_(1-x)V_(x)As

作     者：Guang-Yang Dai Xin He Zhi-Wen Li Chang-Ling Zhang Lu-Chuan Shi Run-Ze Yu Xian-Cheng Wang Chang-Qing Jin 代光阳;何鑫;李芷文;张昌玲;史鲁川;于润泽;望贤成;靳常青

作者机构：Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of SciencesBeijing 100190China Materials Research Laboratory at Songshan LakeDongguan 523808China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2021年第30卷第1期

页      面：100-103页

核心收录：

学科分类：080705[工学-制冷及低温工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China the National Key Research and Development Program of China 

主　　题：iron based superconductor "111"type NaFeAs V doping phase diagram 

摘      要：We grew a series of NaFe_(1-x)V_(x) As(0 ≤ x ≤ 0.03) single crystals and performed the measurements of resistance,magnetic susceptibility, and specific heat to study the superconducting phase diagram by doping V into Na Fe As. Both the structural and the spin-density-wave(SDW) transitions are slightly suppressed by V-doping. While superconducting transition temperature is enhanced to the maximum value of 15 K when the optimal doping level x = 0.007 and then is suppressed rapidly with further V-doping, displaying a small superconducting dome. Our results suggest that V-impurities should act as strong magnetic scattering centers which cause the sharp suppression of superconductivity in NaFe_(1-x)V_(x) As.