Lattice fluctuations and inhomogeneous charge states of high-T-c superconductors
Saini, NL; Oyanagi, H; Wu ZY(吴自玉); Wu, ZY; Bianconi, A
刊名SUPERCONDUCTOR SCIENCE & TECHNOLOGY
2002
卷号15期号:3页码:439-445
学科分类Physics
DOI10.1088/0953-2048/15/3/331
通讯作者Univ Roma La Sapienza, Unita INFM, I-00185 Rome, Italy ; Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy ; AIST, Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 305, Japan ; Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China
文章类型Article; Proceedings Paper
英文摘要We have used x-ray absorption spectroscopy as a tool to study instantaneous local lattice distortions of the CuO2 plane in high-T-c superconductors and we have investigated the inhomogeneous charge states of these materials. The temperature-dependent Cu K-edge extended x-ray absorption fine structure (EXAFS) has been used to determine the correlated Debye-Waller factor of the Cu-O bonds, measuring local lattice fluctuations. The Debye-Waller factor of the Cu-O bonds shows an order-parameter-like behaviour across the charge stripe ordering temperature. The EXAFS results are supported by a temperature-dependent Cu K-edge x-ray absorption near edge structure (XANES) revealing a particular change in the local lattice displacements at the charge stripe ordering. The experimental Cu K-edge XANES results are well reproduced by full multiple scattering calculations including different distortions of the CuO2 plane showing particular lattice displacements which are consistent with the EXAFS results. The particular distortion mode as a response function to the charge stripe ordering has been discussed with several examples. The results are consistent with an inhomogeneous charge distribution in the high-T-c cuprates suggesting an intimate relationship between the charge stripe ordering, local lattice fluctuations and high-T-c superconductivity in the cuprates.
类目[WOS]Physics, Applied ; Physics, Condensed Matter
研究领域[WOS]Physics
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语种英语
WOS记录号WOS:000174698700031
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237491
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
作者单位中国科学院高能物理研究所
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Saini, NL,Oyanagi, H,Wu ZY,et al. Lattice fluctuations and inhomogeneous charge states of high-T-c superconductors[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2002,15(3):439-445.
APA Saini, NL,Oyanagi, H,吴自玉,Wu, ZY,&Bianconi, A.(2002).Lattice fluctuations and inhomogeneous charge states of high-T-c superconductors.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,15(3),439-445.
MLA Saini, NL,et al."Lattice fluctuations and inhomogeneous charge states of high-T-c superconductors".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 15.3(2002):439-445.
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