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	Correspondence between the electronic structure and phase separation in a k-doped fese system
	Liu, C.1,2; Zhao, J. L.1,2; Wang, J. O.1; Qian, H. J.1; Wu, R.1; Wang, H. H.1; Zhang, N.1; Ibrahim, K.1
刊名	Journal of physics-condensed matter
	2017-10-04
卷号	29期号:39页码:6
关键词	Phase separation Electronic structure Film growth
ISSN号	0953-8984
DOI	10.1088/1361-648x/aa8156
通讯作者	Ibrahim, k.(kurash@ihep.ac.cn)
英文摘要	Phase separated potassium intercalated fese thin films have been synthesized by pulsed laser deposition. the coexistence of fese phase and 245 phase was investigated both by x-ray photoemission spectroscopy (xps) and x-ray diffraction. the volume ratio of these two phases is sensitive to temperatures and amount of extra potassium dosing. the xps and ultraviolet photoelectron spectroscopy results indicated that these two phases shows the different hybridization strength between adjacent fe layer and se layer. we infer that the layered electronic structure is the necessary condition of superconductivity in potassium-doped fese system, and the phase separation is driven by competition between quasi-2d and 3d bonding mode within fese layer. similar competition may also be able to interpret the phase seperation in kxfe(2-y)se(2) bulk single crystal.
WOS关键词	SUPERCONDUCTORS ; KXFE2-YSE2
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000408473400002
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2176994
专题	高能物理研究所
通讯作者	Ibrahim, K.
作者单位	1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, C.,Zhao, J. L.,Wang, J. O.,et al. Correspondence between the electronic structure and phase separation in a k-doped fese system[J]. Journal of physics-condensed matter,2017,29(39):6.
APA	Liu, C..,Zhao, J. L..,Wang, J. O..,Qian, H. J..,Wu, R..,...&Ibrahim, K..(2017).Correspondence between the electronic structure and phase separation in a k-doped fese system.Journal of physics-condensed matter,29(39),6.
MLA	Liu, C.,et al."Correspondence between the electronic structure and phase separation in a k-doped fese system".Journal of physics-condensed matter 29.39(2017):6.

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