| Structural modulation and hole distribution in Sr14-xCaxCu24O41 | |
| Ma, C.1; Yang, H. X.1; Zeng, L. J.1; Zhang, Y.1; Wang, L. L.2; Chen, L.2; Xiong, R.2; Shi, J.2,3; Li, J. Q.1 | |
| Corresponding Author | Li, J. Q.(Ljq@aphy.iphy.ac.cn) |
| 2009-05-27 | |
| Source Publication | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| ISSN | 0953-8984 |
| Volume | 21Issue:21Pages:7 |
| Abstract | 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. |
| Funding Organization | National Science Foundation of China ; Chinese Academy of Sciences ; Ministry of Science and Technology of China |
| DOI | 10.1088/0953-8984/21/21/215606 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Science Foundation of China[O7J1091A61] ; National Science Foundation of China[10674105] ; Chinese Academy of Sciences ; Ministry of Science and Technology of China |
| WOS Research Area | Physics |
| WOS Subject | Physics, Condensed Matter |
| WOS ID | WOS:000265658400014 |
| Publisher | IOP PUBLISHING LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/96331 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, J. Q. |
| Affiliation | 1.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 2.Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China 3.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China |
| Recommended Citation 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. |
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