Contribution of interlayer hybridization to the electronic structure in iron pnictides: a study of EELS and first-principles calculations

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	Contribution of interlayer hybridization to the electronic structure in iron pnictides: a study of EELS and first-principles calculations
	Ma, C ; Yang, HX ; Tian, HF ; Shi, HL ; Wang, ZW ; Li, JQ
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2013
卷号	25 期号:11
ISSN号	0953-8984
通讯作者	Ma, C (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	Using electron energy loss spectroscopy (EELS) measurements and first-principles electronic structure calculations, the significant interlayer hybridization between the insulating layers (ReO or Ba) and the conducting FeAs layers was investigated in the layered iron pnictides, which is quite different from the case in the cuprate superconductors. This interlayer hybridization would result in an increase in the bandwidth near the Fermi level and interorbital charge transfer in the Fe 3d orbitals, which subsequently leads to a decrease in the Fe local moment and the modification of the Fermi surface topology. Therefore, a three-dimensional character of the electronic structure due to the interlayer hybridization is expected, as observed in previous experiments. These findings indicate that reduced dimensionality is no longer a necessary condition in the search for high-Tc superconductors in iron pnictides.
资助信息	National Basic Research Program of China 973 Program [2011CBA00101, 2011CB921703, 2010CB923002, 2012CB821404]; National Natural Science Foundation of China [90922001, 10904166, 11274368, 51272277, 11074292, 11004229, 11190022]; Chinese Academy of Sciences
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/56836]
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	Ma, C,Yang, HX,Tian, HF,et al. Contribution of interlayer hybridization to the electronic structure in iron pnictides: a study of EELS and first-principles calculations[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2013,25(11).
APA	Ma, C,Yang, HX,Tian, HF,Shi, HL,Wang, ZW,&Li, JQ.(2013).Contribution of interlayer hybridization to the electronic structure in iron pnictides: a study of EELS and first-principles calculations.JOURNAL OF PHYSICS-CONDENSED MATTER,25(11).
MLA	Ma, C,et al."Contribution of interlayer hybridization to the electronic structure in iron pnictides: a study of EELS and first-principles calculations".JOURNAL OF PHYSICS-CONDENSED MATTER 25.11(2013).