Enhanced conductivity and weakened magnetism in Pb-doped Sr_(2)IrO_(4)  

作　　者：岳智来 甄伟立 牛瑞 焦珂珂 朱文卡 皮雳 张昌锦 Zhi-Lai Yue;Wei-Li Zhen;Rui Niu;Ke-Ke Jiao;Wen-Ka Zhu;Li Pi;Chang-Jin Zhang(High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Science Island Branch of Graduate School,University of Science and Technology of China,Hefei 230026,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China)

机构地区：[1]High Magnetic Field Laboratory,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China [2]Science Island Branch of Graduate School,University of Science and Technology of China,Hefei 230026,China [3]Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China

出　　处：《Chinese Physics B》2024年第1期680-685,共6页中国物理B（英文版）

基　　金：Project supported by the National Key R&D Program of China (Grant Nos.2022YFA1403203 and 2021YFA1600201);the National Natural Science Foundation of China (Grant Nos.11974356 and 12274414);the Joint Funds of the National Natural Science Foundation of China;the Chinese Academy of Sciences Large-Scale Scientific Facility (Grant No.U1932216)。

摘　　要：Group IV element Pb has been selected as the dopant to dope at the Sr site of Sr_(2)IrO_(4). It is exciting to find that the single-phase crystal structure could be maintained with a high Pb doping level of up to x=0.3 in Sr_(2-x)Pb_(x)IrO_(4). The mapping data obtained from energy-dispersive x-ray spectroscopy analyses give solid evidence that the Pb ions are uniformly distributed in the Sr_(2)IrO_(4) matrix. The incorporation of Pb leads to a moderate depression of the canted antiferromagnetic ordering state. The electrical conductivity could be greatly enhanced when the Pb doping content is higher than x=0.2.The present results give a fresh material base to explore new physics in doped Sr_(2)IrO_(4) systems.

关 键 词：iridates DOPING CONDUCTIVITY MAGNETISM 

分 类 号：O469[理学—凝聚态物理]