Observation of an electron band above the Fermi level in FeTe0.55Se0.45 from in-situ surface doping

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	Observation of an electron band above the Fermi level in FeTe0.55Se0.45 from in-situ surface doping
	Zhang, P ; Richard, P ; Xu, N ; Xu, YM ; Ma, J ; Qian, T ; Fedorov, AV ; Denlinger, JD ; Gu, GD ; Ding, H
刊名	APPLIED PHYSICS LETTERS
	2014
卷号	105 期号:17
ISSN号	0003-6951
通讯作者	Richard, P (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	We used in-situ potassium (K) evaporation to dope the surface of the iron-based superconductor FeTe0.55Se0.45. The systematic study of the bands near the Fermi level confirms that electrons are doped into the system, allowing us to tune the Fermi level of this material and to access otherwise unoccupied electronic states. In particular, we observe an electron band located above the Fermi level before doping that shares similarities with a small three-dimensional pocket observed in the cousin, heavily electron-doped KFe2-xSe2 compound. (C) 2014 AIP Publishing LLC.
资助信息	MOST [2010CB923000, 2011CBA001000, 2011CBA00102, 2012CB821403, 2013CB921703]; NSFC from China [11004232, 11034011/A0402, 11234014, 11274362]; Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-05CH11231]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/58881]
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	Zhang, P,Richard, P,Xu, N,et al. Observation of an electron band above the Fermi level in FeTe0.55Se0.45 from in-situ surface doping[J]. APPLIED PHYSICS LETTERS,2014,105(17).
APA	Zhang, P.,Richard, P.,Xu, N.,Xu, YM.,Ma, J.,...&Ding, H.(2014).Observation of an electron band above the Fermi level in FeTe0.55Se0.45 from in-situ surface doping.APPLIED PHYSICS LETTERS,105(17).
MLA	Zhang, P,et al."Observation of an electron band above the Fermi level in FeTe0.55Se0.45 from in-situ surface doping".APPLIED PHYSICS LETTERS 105.17(2014).