Synthesis, structural, and transport properties of the hole-doped superconductor Pr1-xSrxFeAsO

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	Synthesis, structural, and transport properties of the hole-doped superconductor Pr1-xSrxFeAsO
	Mu, G ; Zeng, B ; Zhu, XY ; Han, F ; Cheng, P ; Shen, B ; Wen, HH
刊名	PHYSICAL REVIEW B
	2009
卷号	79 期号:10
关键词	TEMPERATURE DEPENDENCE SPIN
ISSN号	1098-0121
通讯作者	Mu, G (reprint author), Chinese Acad Sci, Natl Lab Superconduct, Inst Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要	Superconductivity was achieved in PrFeAsO by partially substituting Pr3+ with Sr2+. The electrical transport properties and structure of this superconductor Pr1-xSrxFeAsO at different doping levels (x=0.05 similar to 0.25) were investigated systematically. It was found that the lattice constants (a and c axes) increase monotonously with Sr or hole concentration. The superconducting transition temperature at about 16.3 K (95% rho(n)) was observed around the doping level of 0.20 similar to 0.25. A detailed investigation was carried out in the sample with doping level of x=0.25. The domination of holelike charge carriers in this material was confirmed by Hall-effect measurements. The magnetoresistance (MR) behavior can be well described by a simple two-band model. The upper critical field of the sample with T-c=16.3 K (x=0.25) was estimated to be beyond 45 T. Our results suggest that the hole-doped samples may have higher upper critical fields comparing to the electron-doped ones, due to the higher quasiparticle density of states at the Fermi level.
收录类别	SCI
资助信息	Natural Science Foundation of China, the Ministry of Science and Technology of China (973 project) [2006CB01000, 2006CB921802]; Chinese Academy of Sciences (ITSNEM)
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/54488]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Mu, G,Zeng, B,Zhu, XY,et al. Synthesis, structural, and transport properties of the hole-doped superconductor Pr1-xSrxFeAsO[J]. PHYSICAL REVIEW B,2009,79(10).
APA	Mu, G.,Zeng, B.,Zhu, XY.,Han, F.,Cheng, P.,...&Wen, HH.(2009).Synthesis, structural, and transport properties of the hole-doped superconductor Pr1-xSrxFeAsO.PHYSICAL REVIEW B,79(10).
MLA	Mu, G,et al."Synthesis, structural, and transport properties of the hole-doped superconductor Pr1-xSrxFeAsO".PHYSICAL REVIEW B 79.10(2009).