Evidence of a Spin Resonance Mode in the Iron-Based Superconductor Ba0.6K0.4Fe2As2 from Scanning Tunneling Spectroscopy

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	Evidence of a Spin Resonance Mode in the Iron-Based Superconductor Ba0.6K0.4Fe2As2 from Scanning Tunneling Spectroscopy
	Shan, L ; Gong, J ; wang, yl ; Shen, B ; Hou, XY ; Ren, C ; Li, CH ; Yang, H ; Wen, HH ; Li, SL ; Dai, PC
刊名	PHYSICAL REVIEW LETTERS
	2012
卷号	108 期号:22
关键词	TRANSITION-TEMPERATURE SUPERCONDUCTOR NEUTRON-SCATTERING STATES EXCITATIONS DENSITY GAPS
ISSN号	0031-9007
通讯作者	Shan, L: Chinese Acad Sci, Natl Lab Superconduct, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	We used high-resolution scanning tunneling spectroscopy to study the hole-doped iron pnictide superconductor Ba0.6K0.4Fe2As2 (T-c = 38 K). Features of a bosonic excitation (mode) are observed in the measured quasiparticle density of states. The bosonic features are intimately associated with the superconducting order parameter and have a mode energy of similar to 14 meV, similar to the spin resonance measured by inelastic neutron scattering. These results indicate a strong electron-spin excitation coupling in iron pnictide superconductors, similar to that in high-T-c copper oxide superconductors.
收录类别	SCI
资助信息	National Natural Science Foundation of China [11174349, 51002180]; National Basic Research Program of China/973 programs [2011CBA00100, 2012CB821400, 2010CB833102, 2010CB923002]; Chinese Academy of Sciences; U. S. DOE; BES through DOE [DE-FG02-05ER46202]
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/311004/37621]
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	Shan, L,Gong, J,wang, yl,et al. Evidence of a Spin Resonance Mode in the Iron-Based Superconductor Ba0.6K0.4Fe2As2 from Scanning Tunneling Spectroscopy[J]. PHYSICAL REVIEW LETTERS,2012,108(22).
APA	Shan, L.,Gong, J.,wang, yl.,Shen, B.,Hou, XY.,...&Dai, PC.(2012).Evidence of a Spin Resonance Mode in the Iron-Based Superconductor Ba0.6K0.4Fe2As2 from Scanning Tunneling Spectroscopy.PHYSICAL REVIEW LETTERS,108(22).
MLA	Shan, L,et al."Evidence of a Spin Resonance Mode in the Iron-Based Superconductor Ba0.6K0.4Fe2As2 from Scanning Tunneling Spectroscopy".PHYSICAL REVIEW LETTERS 108.22(2012).