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Special Issue:
Virtual Special Topic — High temperature superconductivity
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Doping Mn into (Li1-xFex)OHFe1-ySe superconducting crystals via ion-exchange and ion-release/introduction syntheses |
| Huaxue Zhou(周花雪)1,2, Shunli Ni(倪顺利)2,3, Jie Yuan(袁洁)2,3, Jun Li(李军)4, Zhongpei Feng(冯中沛)2,3, Xingyu Jiang(江星宇)2,3, Yulong Huang(黄裕龙)2,3, Shaobo Liu(刘少博)2,3, Yiyuan Mao(毛义元)2,3, Fang Zhou(周放)2,3, Kui Jin(金魁)2,3, Xiaoli Dong(董晓莉)2,3, Zhongxian Zhao(赵忠贤)2,3 |
1 College of Physics, Chongqing University, Chongqing 401331, China;
2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190, China;
3 Key Laboratory for Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, China;
4 Research Institute of Superconductor Electronics, Nanjing University, Nanjing 210093, China |
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Abstract We report the success in introducing Mn into (Li1-xFex)OHFe1-ySe superconducting crystals by applying two different hydrothermal routes, ion exchange (1-step) and ion release/introduction (2-step). The micro-region x-ray diffraction and energy dispersive x-ray spectroscopy analyses indicate that Mn has been doped into the lattice, and its content in the 1-step fabricated sample is higher than that in the 2-step one. Magnetic susceptibility and electric transport properties reveal that Mn doping influences little on the superconducting transition, regardless of 1-step or 2-step routes. By contrast, the characteristic temperature T*, at which the negative Hall coefficient reaches its minimum, is significantly reduced by Mn doping. This implies that the hole carriers contribution is obviously modified, and hence the hole band might have no direct relationship with the superconductivity in (Li1-xFex)OHFe1-ySe superconductors. Our present hydrothermal methods of ion exchange and ion release/introduction provide an efficient way for elements substitution/doping into (Li1-xFex)OHFe1-ySe superconductors, which will promote the in-depth investigations on the role of multiple electron and hole bands and their interplay with the high-temperature superconductivity in the FeSe-based superconductors.
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Accepted manuscript online:
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PACS:
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74.70.Xa
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(Pnictides and chalcogenides)
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82.30.Hk
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(Chemical exchanges (substitution, atom transfer, abstraction, disproportionation, and group exchange))
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81.10.-h
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(Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
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74.25.F-
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(Transport properties)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11574370 and 61501220), Frontier Program of the Chinese Academy of Sciences (Grant Nos. QYZDY-SSW-SLH001 and QYZDY-SSW-SLH008), the National Basic Research Program of China (Grant Nos. 2013CB921700 and 2016YFA0300301), and “Strategic Priority Research Program (B)” of the Chinese Academy of Sciences (Grant No. XDB07020100). |
Corresponding Authors:
Xiaoli Dong
E-mail: dong@iphy.ac.cn
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Cite this article:
Huaxue Zhou(周花雪), Shunli Ni(倪顺利), Jie Yuan(袁洁), Jun Li(李军), Zhongpei Feng(冯中沛), Xingyu Jiang(江星宇), Yulong Huang(黄裕龙), Shaobo Liu(刘少博), Yiyuan Mao(毛义元), Fang Zhou(周放), Kui Jin(金魁), Xiaoli Dong(董晓莉), Zhongxian Zhao(赵忠贤) Doping Mn into (Li1-xFex)OHFe1-ySe superconducting crystals via ion-exchange and ion-release/introduction syntheses 2017 Chin. Phys. B 26 057402
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