Influence of metal spacer on the properties and microstructure of multilayer films and analyses

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	Influence of metal spacer on the properties and microstructure of multilayer films and analyses
	Li, MH ; Yu, GH ; Zhu, FW ; Zeng, DC ; Lai, WY
刊名	THIN SOLID FILMS
	2008
卷号	516 期号:8 页码:2058
ISSN号	0040-6090
中文摘要	The fine structures of the electron energy-loss spectra (EELS) for the B-K edge have been examined in NbB2 and superconducting Nb0.75Mg0.25B2. The experimental results are analyzed based on the calculations of density functional theory (DFT) using the Wien2k code. The results of the EELS spectra and the angular decomposition of the density of states (DOS) reveal that both the B p(z) and B p(x) + p(y) states in NbB2 have large weights at the Fermi energy due to intersheet covalent bonding with notable hybridization between the Nb 4d and B 2p states. This kind of hybridization also results in different core-hole behaviors for the B-K edge in two orthogonal crystallographic orientations. The best fit between experimental and theoretical data is achieved with consideration of the core-hole effect of the B 1s states, in particular for the q perpendicular to c spectra. Analysis of the electronic structure of the Nb(1-)xMg(x)B(2) superconductors suggests that confinement of the intersheet covalent bonding is likely to be favorable for the improvement of superconductivity in this kind of materials. (c) 2007 Elsevier B.V. All rights reserved.
收录类别	SCI
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/39849]
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	Li, MH,Yu, GH,Zhu, FW,et al. Influence of metal spacer on the properties and microstructure of multilayer films and analyses[J]. THIN SOLID FILMS,2008,516(8):2058.
APA	Li, MH,Yu, GH,Zhu, FW,Zeng, DC,&Lai, WY.(2008).Influence of metal spacer on the properties and microstructure of multilayer films and analyses.THIN SOLID FILMS,516(8),2058.
MLA	Li, MH,et al."Influence of metal spacer on the properties and microstructure of multilayer films and analyses".THIN SOLID FILMS 516.8(2008):2058.