Direct Observation of Nodes and Twofold Symmetry in FeSe Superconductor

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	Direct Observation of Nodes and Twofold Symmetry in FeSe Superconductor
	Song, CL ; Wang, YL ; Cheng, P ; Jiang, YP ; Li, W ; Zhang, T ; Li, Z ; He, K ; Wang, LL ; Jia, JF ; Hung, HH ; Wu, CJ ; Ma, XC ; Chen, X ; Xue, QK
刊名	SCIENCE
	2011
卷号	332 期号:6036 页码:1410
关键词	VORTEX-CORE DENSITY STATES
ISSN号	0036-8075
通讯作者	Ma, XC: Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	We investigated the electron-pairing mechanism in an iron-based superconductor, iron selenide (FeSe), using scanning tunneling microscopy and spectroscopy. Tunneling conductance spectra of stoichiometric FeSe crystalline films in their superconducting state revealed evidence for a gap function with nodal lines. Electron pairing with twofold symmetry was demonstrated by direct imaging of quasiparticle excitations in the vicinity of magnetic vortex cores, Fe adatoms, and Se vacancies. The twofold pairing symmetry was further supported by the observation of striped electronic nanostructures in the slightly Se-doped samples. The anisotropy can be explained in terms of the orbital-dependent reconstruction of electronic structure in FeSe.
收录类别	SCI
资助信息	National Science Foundation; Ministry of Science and Technology of China; U.S. Army Research Office [W911NF0810291]
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/311004/36060]
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	Song, CL,Wang, YL,Cheng, P,et al. Direct Observation of Nodes and Twofold Symmetry in FeSe Superconductor[J]. SCIENCE,2011,332(6036):1410.
APA	Song, CL.,Wang, YL.,Cheng, P.,Jiang, YP.,Li, W.,...&Xue, QK.(2011).Direct Observation of Nodes and Twofold Symmetry in FeSe Superconductor.SCIENCE,332(6036),1410.
MLA	Song, CL,et al."Direct Observation of Nodes and Twofold Symmetry in FeSe Superconductor".SCIENCE 332.6036(2011):1410.