| Structural modifications and phonon softening in Bi2Sr2Ca1-xRxCu2O8+delta (R = Pr and Gd) single crystals |
| S. J. Feng; G. Li; Q. Han; J. Ma; L. Shi; X. F. Sun; J. Zuo; X. G. Li
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| 2003
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| 发表期刊 | Journal of Physics-Condensed Matter
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| ISSN | 0953-8984
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| 卷号 | 15期号:17页码:2859-2866 |
| 摘要 | The phonon Raman spectra of Bi2Sr2Ca1-xRxCu2O8+delta (R = Pr and Gd) single crystals are systematically investigated. The experimental results show that the O(2)(Sr)A(1g) mode softens with Pr and Gd doping, while the O(1)(Cu) B-1g mode softens with Pr doping but hardens with Gd doping. The changes of average ionic radius on the Ca site in Bi-based cuprates can account well for the Raman frequency shifts of the O(I)(Cu) mode, but have little influence on the O(2)(Sr) mode. The frequency softening of the O(2)(Sr) mode in Pr- and Gd-doped Bi2212 crystals mainly results from contraction of the BiO bilayers with doping content. The correlation between the O(2)(Sr) mode frequency and the c-axis parameter as well as the incommensurate modulation wavelength is discussed. |
| 部门归属 | univ sci & technol china, dept mat sci & engn, struct res lab, hefei 230026, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;feng, sj (reprint author), univ sci & technol china, dept mat sci & engn, struct res lab, hefei 230026, peoples r china
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| 关键词 | Raman-active Phonons
Incommensurate Modulation
Bi
bi2sr2cacu2o8+delta
Superconductivity
Spectroscopy
Scattering
Tc
Spectra
Growth
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| URL | 查看原文
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| WOS记录号 | WOS:000183071400038
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/35828
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
S. J. Feng,G. Li,Q. Han,et al. Structural modifications and phonon softening in Bi2Sr2Ca1-xRxCu2O8+delta (R = Pr and Gd) single crystals[J]. Journal of Physics-Condensed Matter,2003,15(17):2859-2866.
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| APA |
S. J. Feng.,G. Li.,Q. Han.,J. Ma.,L. Shi.,...&X. G. Li.(2003).Structural modifications and phonon softening in Bi2Sr2Ca1-xRxCu2O8+delta (R = Pr and Gd) single crystals.Journal of Physics-Condensed Matter,15(17),2859-2866.
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| MLA |
S. J. Feng,et al."Structural modifications and phonon softening in Bi2Sr2Ca1-xRxCu2O8+delta (R = Pr and Gd) single crystals".Journal of Physics-Condensed Matter 15.17(2003):2859-2866.
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