THE ATOMIC NEAR NEIGHBORING STRUCTURE OF CU1-XAUX SOLID-SOLUTION STUDIED WITH EXAFS

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	THE ATOMIC NEAR NEIGHBORING STRUCTURE OF CU1-XAUX SOLID-SOLUTION STUDIED WITH EXAFS
	LU, KQ ; WU, ZH ; DONG, J ; CHEN, XP ; Fang, ZZ
刊名	JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
	1993
卷号	32 页码:631
关键词	ABSORPTION FINE-STRUCTURE LOCAL-STRUCTURE SPECTROSCOPY
ISSN号	0021-4922
通讯作者	LU, KQ (reprint author), CHINESE ACAD SCI,INST PHYS,BEIJING 100080,PEOPLES R CHINA.
中文摘要	The linearly polarized Cu L3 XANES (X-ray Absorption Near Edge Structure) spectra of several high T(C) superconductor single crystals and of their parent insulating compounds have been measured. The spectra have been interpreted in the frame of the full multiple scattering (MS) theory in the real space. Over a range of 40 eV, the polarized Cu L3 XANES spectra have been predicted in term of a one-electron dipole (DELTA1=+1) transitions, probing the partial density of states of the conduction bands projected on the Cu site with the selected orbital angular momentum 1=2 and their projections m1. The oscillator strenght for the dipole allowed transitions DELTA1=-1 has been found to be a factor 100 weaker dian the Cu 2p to 3d transitions. The physical origin of all features in the continuum XANES spectra and the effect of the electron-hole Coulomb interaction in the final states have been identified. The difference spectra between the metal and the insulating phase allows to identify the symmetry of the itinerant 3d9L underbar states induced by doping, that is deduced to be a mixture of Cu 3d holes with m1=0, and 2 orbital angular momentum and oxygen 2p holes on planar oxygen in the molecular orbital combination of local a1 and b1 symmetry. Evidence for the more delocalized character of 3d9x2-y2L(b1) underbar states versus the more localized character of 3d3z2-r2L(a1) underbar states has been found.
收录类别	SCI
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/44902]
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	LU, KQ,WU, ZH,DONG, J,et al. THE ATOMIC NEAR NEIGHBORING STRUCTURE OF CU1-XAUX SOLID-SOLUTION STUDIED WITH EXAFS[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS,1993,32:631.
APA	LU, KQ,WU, ZH,DONG, J,CHEN, XP,&Fang, ZZ.(1993).THE ATOMIC NEAR NEIGHBORING STRUCTURE OF CU1-XAUX SOLID-SOLUTION STUDIED WITH EXAFS.JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS,32,631.
MLA	LU, KQ,et al."THE ATOMIC NEAR NEIGHBORING STRUCTURE OF CU1-XAUX SOLID-SOLUTION STUDIED WITH EXAFS".JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS 32(1993):631.