Structural modulation and hole distribution in Sr14-xCaxCu24O41

doi:10.1088/0953-8984/21/21/215606

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	Structural modulation and hole distribution in Sr14-xCaxCu24O41
	Ma, C.2; Yang, H. X.2; Zeng, L. J.2; Zhang, Y.2; Wang, L. L.1; Chen, L.1; Xiong, R.1; Shi, J.1,3; Li, J. Q.2
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2009-05-27
卷号	21 期号:21 页码:7
ISSN号	0953-8984
DOI	10.1088/0953-8984/21/21/215606
通讯作者	Li, J. Q.(Ljq@aphy.iphy.ac.cn)
英文摘要	Structural properties and hole distribution in the spin-ladder compound Sr14-xCaxCu24O41 have been extensively investigated by transmission electron microscopy (TEM). The complex electron diffraction patterns and high-resolution TEM observations reveal a clear incommensurate structural modulation along the c-axis direction attributable to two mismatched sublattices; this modulation strongly depends on hole distribution in the compounds. The fine structures of the O K and Cu L-2,L-3 ionization edges for the Sr14-xCaxCu24O41 compounds recorded under different conditions indicate that more doped holes reside in the chains than the ladders, and that substituting Ca for Sr atoms results in a charge redistribution between the chains and ladders. Based on the experimental findings, the theoretical results, including the partial density of states and optical conductivity spectra calculated by the density functional theory, are also discussed.
资助项目	National Science Foundation of China[O7J1091A61] ; National Science Foundation of China[10674105] ; Chinese Academy of Sciences ; Ministry of Science and Technology of China
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000265658400014
资助机构	National Science Foundation of China ; Chinese Academy of Sciences ; Ministry of Science and Technology of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/96330]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, J. Q.
作者单位	1.Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma, C.,Yang, H. X.,Zeng, L. J.,et al. Structural modulation and hole distribution in Sr14-xCaxCu24O41[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2009,21(21):7.
APA	Ma, C..,Yang, H. X..,Zeng, L. J..,Zhang, Y..,Wang, L. L..,...&Li, J. Q..(2009).Structural modulation and hole distribution in Sr14-xCaxCu24O41.JOURNAL OF PHYSICS-CONDENSED MATTER,21(21),7.
MLA	Ma, C.,et al."Structural modulation and hole distribution in Sr14-xCaxCu24O41".JOURNAL OF PHYSICS-CONDENSED MATTER 21.21(2009):7.