Effects of phosphorus doping on the physical properties of axion insulator candidate EuIn_(2)As_(2)  

作　　者：Feihao Pan Congkuan Tian Jiale Huang Daye Xu Jinchen Wang Peng Cheng Juanjuan Liu Hongxia Zhang 潘斐豪;田丛宽;黄嘉乐;徐大业;汪晋辰;程鹏;刘娟娟;张红霞(Laboratory for Neutron Scattering and Beijing Key Laboratory of Optoelectronic Functional Materials and MicroNano Devices,Department of Physics,Renmin University of China,Beijing 100872,China)

机构地区：[1]Laboratory for Neutron Scattering and Beijing Key Laboratory of Optoelectronic Functional Materials and MicroNano Devices,Department of Physics,Renmin University of China,Beijing 100872,China

出　　处：《Chinese Physics B》2022年第5期641-646,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12074426,11227906and U2030106);the Fundamental Research Funds for the Central Universities,the Research Funds of Renmin University of China(Grant No.20XNLG19)。

摘　　要：We report an investigation on the single crystal growth,magnetic and transport properties of Eu In_(2)(As_(1-x)P_(x))_(2(0≤x≤1).The physical properties of axion insulator candidate Eu In;As;can be effectively tuned by P-doping.With increasing x,the c-axis lattice parameter decreases linearly,the magnetic transition temperature gradually increases and ferromagnetic interactions are enhanced.This is similar to the previously reported high pressure effect on Eu In_(2)As_(2).For x=0.40,a spin glass state at T_(g)=10 K emerges together with the observations of a butter-fly shaped magnetic hysteresis and slow magnetic behavior.Besides,magnetic transition has great influence on the charge carriers in this system and negative colossal magnetoresistance is observed for all P-doped samples.Our findings suggest that Eu In_(2)(As_(1-x)P_(x))_(2) is a promising material playground for exploring novel topological states.

关 键 词：axion topological insulator 

分 类 号：O469[理学—凝聚态物理]