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Enhanced electrical conductivity and diluted Ir4+ spin orders in electron doped iridates Sr2-xGaxIrO4

文献类型：期刊论文

作者Han, Tao1,2; Wang, Yongjian1; Yang, Jun1; He, Lei1; Xu, Junmin1; Liang, Dandan1; Han, Hui1; Ge, M.3; Xi, C. Y.1; Zhu, W. K.1,4
刊名APPLIED PHYSICS LETTERS
出版日期2016-11-07
卷号109期号:19页码:1-5
DOI10.1063/1.4967699
文献子类Article
英文摘要Sr2IrO4 represents a fascinating system to study comparable electronic correlations and spin-orbit couplings, and recently attracts considerable attention in high-temperature superconductivity. Here, we report on the transport and magnetic properties in gallium-doped Sr2IrO4. A metallic state is discovered when doping x is over 0.1, which could be understood in terms of the quickly decreased energy gap and increased carrier concentration. In addition to the high-temperature magnetic transition (T-C>200 K), a low-temperature one (TC') is also observed for the x = 0.05-0.10 samples. Both of the magnetic states are found to be canted antiferromagnetism. The low-temperature phase is strongly depressed by doping and vanishes when doping is further increased, which is probably stabilized by the long-way exchange interactions of diluted Ir4+ spins via Ir3+ ions. Our studies provide an insight into the electrical and magnetic states tuned by chemical doping in Sr2IrO4, thereby facilitating the seeking of superconductivity in this system. Published by AIP Publishing.
WOS关键词REVERSAL SYMMETRY-BREAKING ; SR2IRO4 ; TRANSITION ; SUPERCONDUCTIVITY ; SR2IR1-XRUXO4 ; SR2RUO4
WOS研究方向Physics
语种英语
WOS记录号WOS:000387999600035
资助机构National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Key Research and Development Program of China(2016YFA0300404) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; National Natural Science Foundation of China(U1532267) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516) ; CASHIPS Director's Fund(YZJJ201516)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/30189]  
专题合肥物质科学研究院_中科院强磁场科学中心
作者单位1.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
4.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714		 Han, Tao,Wang, Yongjian,Yang, Jun,et al. Enhanced electrical conductivity and diluted Ir4+ spin orders in electron doped iridates Sr2-xGaxIrO4[J]. APPLIED PHYSICS LETTERS,2016,109(19):1-5.
APA Han, Tao.,Wang, Yongjian.,Yang, Jun.,He, Lei.,Xu, Junmin.,...&Zhang, Yuheng.(2016).Enhanced electrical conductivity and diluted Ir4+ spin orders in electron doped iridates Sr2-xGaxIrO4.APPLIED PHYSICS LETTERS,109(19),1-5.
MLA Han, Tao,et al."Enhanced electrical conductivity and diluted Ir4+ spin orders in electron doped iridates Sr2-xGaxIrO4".APPLIED PHYSICS LETTERS 109.19(2016):1-5.

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来源：合肥物质科学研究院

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