Enhanced conductivity and weakened magnetism in Pb-doped Sr 2 IrO 4

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 sp...

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Published in:Chinese physics B 2024-01, Vol.33 (1), p.17402
Main Authors: Yue 岳, Zhi-Lai 智来, Zhen 甄, Wei-Li 伟立, Niu 牛, Rui 瑞, Jiao 焦, Ke-Ke 珂珂, Zhu 朱, Wen-Ka 文卡, Pi 皮, Li 雳, Zhang 张, Chang-Jin 昌锦
Format: Article
Language:English
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Summary: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.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/ad08a9