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Enhanced conductivity and weakened magnetism in Pb-doped Sr2IrO4 |
| Zhi-Lai Yue(岳智来)1,2, Wei-Li Zhen(甄伟立)1, Rui Niu(牛瑞)1, Ke-Ke Jiao(焦珂珂)1, Wen-Ka Zhu(朱文卡)1,†, Li Pi(皮雳)1,2,‡, and Chang-Jin Zhang(张昌锦)1,3,§ |
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 |
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Abstract Group IV element Pb has been selected as the dopant to dope at the Sr site of Sr2IrO4. 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 Sr2-xPbxIrO4. The mapping data obtained from energy-dispersive x-ray spectroscopy analyses give solid evidence that the Pb ions are uniformly distributed in the Sr2IrO4 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 Sr2IrO4 systems.
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Received: 20 September 2023
Revised: 16 October 2023
Accepted manuscript online: 02 November 2023
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PACS:
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74.10.+v
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(Occurrence, potential candidates)
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71.27.+a
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(Strongly correlated electron systems; heavy fermions)
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71.30.+h
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(Metal-insulator transitions and other electronic transitions)
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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| Fund: 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 and the Chinese Academy of Sciences Large-Scale Scientific Facility (Grant No. U1932216). |
Corresponding Authors:
Wen-Ka Zhu, Li Pi, and Chang-Jin Zhang
E-mail: wkzhu@hmfl.ac.cn;pili@ustc.edu.cn;zhangcj@hmfl.ac.cn
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Cite this article:
Zhi-Lai Yue(岳智来), Wei-Li Zhen(甄伟立), Rui Niu(牛瑞), Ke-Ke Jiao(焦珂珂), Wen-Ka Zhu(朱文卡), Li Pi(皮雳), and Chang-Jin Zhang(张昌锦) Enhanced conductivity and weakened magnetism in Pb-doped Sr2IrO4 2024 Chin. Phys. B 33 017402
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