Characteristics of structure and carrier localization in YBCO systems doped with magnetic ions Fe and Ni
文献类型：期刊论文
| 作者 | Li, PL ; Zhang, JC ; Chao, GX ; Deng, DM ; Liu, LH ; Cheng, D ; Chao, J ; Cao, SX |
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2004 |
| 卷号 | 53期号:4页码:1223 |
| 关键词 | POSITRON-ANNIHILATION ELECTRONIC-STRUCTURE VACANCY PROPERTIES COPPER OXIDES SUPERCONDUCTIVITY YBA2CU3O7-DELTA SUBSTITUTION LIFETIME DENSITY OXYGEN |
| ISSN号 | 1000-3290 |
| 通讯作者 | Li, PL: Shanghai Univ, Dept Phys, Shanghai 200436, Peoples R China. |
| 中文摘要 | To make clear the physical mechanism of substitution by the magnetic ions Fe and Ni in different sites in YBCO systems, the positron annihilation technology ( PAT) and simulated calculations are utilized to systemically investigate the compounds YBa2Cu3-x, (Fe,Ni)(x)O7-delta( x = 0.0-0.5). The results obtained show that the doping ions Fe and Ni form different kinds of ion clusters and enter the crystal lattice. When occupying Cu(2) sites in CuO2 planes, the ions gather into double square and/or other clusters, which results in a strong electronic localization and would directly affect the pairing and transportation of carriers' so the superconductivity is suppressed dramatically. While ions substitution for Cu(1) through gathering hexamer and/or other clusters, this induces the localization of holes and weakens the function of carrier reservoir; thus carriers cannot easily transfer to CuO2 planes. However, in this case, the pairing and transportation of carriers are not affected directly, thus the superconductivity will be suppressed weakly. On the other hand, the present results indicate the suppression of superconductivity has no direct correlation with the magnetism of Fe and Ni ions itself. |
| 收录类别 | SCI |
| 语种 | 中文 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/34599]  |
| 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 | Li, PL,Zhang, JC,Chao, GX,et al. Characteristics of structure and carrier localization in YBCO systems doped with magnetic ions Fe and Ni[J]. ACTA PHYSICA SINICA,2004,53(4):1223. |
| APA | Li, PL.,Zhang, JC.,Chao, GX.,Deng, DM.,Liu, LH.,...&Cao, SX.(2004).Characteristics of structure and carrier localization in YBCO systems doped with magnetic ions Fe and Ni.ACTA PHYSICA SINICA,53(4),1223. |
| MLA | Li, PL,et al."Characteristics of structure and carrier localization in YBCO systems doped with magnetic ions Fe and Ni".ACTA PHYSICA SINICA 53.4(2004):1223. |
入库方式： OAI收割
来源：物理研究所
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