Electronic and magnetic phase diagram in KxFe2-ySe2 superconductors

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	Electronic and magnetic phase diagram in KxFe2-ySe2 superconductors
	Yan, YJ ; Zhang, M ; Wang, AF ; Ying, JJ ; Li, ZY ; Qin, W ; Luo, XG ; Li, JQ ; Hu, JP ; Chen, XH
刊名	SCIENTIFIC REPORTS
	2012
卷号	2
关键词	HIGH-TEMPERATURE SUPERCONDUCTIVITY MUON SPIN ROTATION COEXISTENCE ANTIFERROMAGNETISM BA0.6K0.4FE2AS2 SMFEASO1-XFX CS
ISSN号	2045-2322
通讯作者	Chen, XH: Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China.
中文摘要	The correlation and competition between antiferromagnetism and superconductivity are one of the most fundamental issues in high temperature superconductors. Superconductivity in high temperature cuprate superconductors arises from suppressing an antiferromagnetic (AFM) Mott insulator(1) while in iron-pnictide superconductors arises from AFM semimetals and can coexist with AFM orders(2-9). This difference raises many intriguing debates on the relation between the two classes of high temperature superconductors. Recently, superconductivity at 32 K has been reported in iron-chalcogenide superconductors A(x)Fe(2-y)Se(2) (A=K, Rb, and Cs)(10-12). They have the same structure as that of iron-pnictide 122-system(13-15). Here, we report electronic and magnetic phase diagram of KxFe2-ySe2 system as a function of Fe valence. We find a superconducting phase sandwiched between two AFM insulating phases. The two insulating phases are characterized by two distinct superstructures caused by Fe vacancy orders with modulation wave vectors of q(1)=(1/5, 3/5, 0) and q(2)=(1/4, 3/4, 0), respectively.
收录类别	SCI
资助信息	Natural Science Foundation of China; Ministry of Science and Technology of China; Chinese Academy of Sciences
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/37140]
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	Yan, YJ,Zhang, M,Wang, AF,et al. Electronic and magnetic phase diagram in KxFe2-ySe2 superconductors[J]. SCIENTIFIC REPORTS,2012,2.
APA	Yan, YJ.,Zhang, M.,Wang, AF.,Ying, JJ.,Li, ZY.,...&Chen, XH.(2012).Electronic and magnetic phase diagram in KxFe2-ySe2 superconductors.SCIENTIFIC REPORTS,2.
MLA	Yan, YJ,et al."Electronic and magnetic phase diagram in KxFe2-ySe2 superconductors".SCIENTIFIC REPORTS 2(2012).