Superconductivity and Charge Density Wave in Iodine-Doped CuIr_(2)Te_(4)

作     者：Mebrouka Boubeche Jia Yu Li Chushan Wang Huichao Lingyong Zeng Yiyi He Xiaopeng Wang Wanzhen Su Meng Wang Dao-Xin Yao Zhijun Wang Huixia Luo Mebrouka Boubeche;于佳;李楚善;王慧超;曾令勇;何溢懿;王晓鹏;苏婉珍;王猛;姚道新;王志俊;罗惠霞

作者机构：School of Materials Science and EngineeringState Key Laboratory of Optoelectronic Materials and Technologiesand Key Lab of Polymer Composite&Functional MaterialsSun Yat-Sen UniversityGuangzhou 510275China School of PhysicsSun Yat-Sen UniversityGuangzhou 510275China Beijing National Laboratory for Condensed Matter Physicsand Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2021年第38卷第3期

页      面：81-88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] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China(Grants No.11922415) the Guangdong Basic and Applied Basic Research Foundation(Grants No.2019A1515011718) the Fundamental Research Funds for the Central Universities(Grants No.19lgzd03) the Key R&D Program of Guangdong Province,China(Grants No.2019B110209003) the Pearl River Scholarship Program of Guangdong Province Universities and Colleges(Grants No.20191001) supported by the National Natural Science Foundation of China(Grant No.12004441) the Hundreds of Talents Program of Sun Yat-Sen University the Fundamental Research Funds for the Central Universities(Grants No.20lgpy165) supported by the National Natural Science Foundation of China(Grant No.11974432) NKRDPC-2017YFA0206203,and NKRDPC-2018YFA0306001 supported by the National Nature Science Foundation of China(11904414) the Natural Science Foundation of Guangdong(2018A030313055) National Key Research and Development Program of China(Grants No.2019YFA0705700) 

主　　题：resistivity magnetization diagram 

摘      要：We report a systematic investigation on the evolution of the structural and physical properties,including the charge density wave(CDW) and superconductivity of the polycrystalline CuIr_(2)Te_(4-x)Ix for 0.0 ≤x≤ *** diffraction results indicate that both of a and c lattice parameters increase linearly when 0.0 ≤ x ≤ *** resistivity measurements indicate that the CDW is destabilized with slight x but reappears at x≥0.9 with very high ***,the superconducting transition temperature Tc enhances as x increases and reaches a maximum value of around 2.95 K for the optimal composition CuIr_(2)Te_(1.9)I_(0.1) followed by a slight decrease with higher iodine doping *** specific heat jump(ΔC/γTc) for the optimal composition CuIr_(2)Te_(3.9)I_(0.1) is approximately 1.46,which is close to the Bardeen-Cooper-Schrieffer value of 1.43,indicating that it is a bulk *** results of thermodynamic heat capacity measurements under different magnetic fields |Cp(T,H)],magnetization M(T,H) and magneto-transport ρ(T,H) measurements further suggest that CuIr_(2)Te_(4-x)Ix bulks are type-Ⅱ ***,an electronic phase diagram for this CuIr_(2)Te_(4-x)Ix system has been *** present study provides a suitable material platform for further investigation of the interplay of the CDW and superconductivity.