Microscopic hamiltonian for Zn- or Ni-substituted high-temperature cuprate superconductors
文献类型：期刊论文
| 作者 | Xiang, T ; Su, YH; Panagopoulos, C; Su, ZB; Yu, L; Xiang, T , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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| 刊名 | PHYSICAL REVIEW B
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| 出版日期 | 2002 |
| 卷号 | 66期号:17页码:- |
| 关键词 | D-wave Superconductors Resonant Impurity Scattering T-c Superconductors Magnetic-impurities Superfluid Response Oxides State Atoms bi2sr2cacu2o8+delta Transition |
| ISSN号 | 1098-0121 |
| 英文摘要 | We have derived the effective low-energy Hamiltonian for Zn- or Ni-substituted high-T-c cuprates from microscopic three-band models consisting of the most relevant Cu or impurity 3d and O 2p orbitals. We find that both the scattering potential and hopping integral induced by impurities have a finite range but decay very fast with distance from the impurity. The Zn scattering potential is very strong and attractive for electrons. The Ni scattering potential is much weaker than the Zn case, resulting from the hybridization between Ni ions and O holes. This profound difference is due to neither the electric charge nor d-level location, but rather because of the interplay between the valence state of the impurity and the strong correlation background. It gives a natural account of the unusual effect of Ni and Zn on the reduction of the superconducting transition temperature. The interlayer hopping of electrons is highly anisotropic and nonlocal, determined by the in-plane electronic structure. This leads to a quantum interference of states from different sites and affects strongly the scanning tunneling spectrum perpendicular to CuO2 planes. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000179611700088 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13407]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Xiang, T , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Xiang, T,Su, YH,Panagopoulos, C,et al. Microscopic hamiltonian for Zn- or Ni-substituted high-temperature cuprate superconductors[J]. PHYSICAL REVIEW B,2002,66(17):-. |
| APA | Xiang, T,Su, YH,Panagopoulos, C,Su, ZB,Yu, L,&Xiang, T , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2002).Microscopic hamiltonian for Zn- or Ni-substituted high-temperature cuprate superconductors.PHYSICAL REVIEW B,66(17),-. |
| MLA | Xiang, T,et al."Microscopic hamiltonian for Zn- or Ni-substituted high-temperature cuprate superconductors".PHYSICAL REVIEW B 66.17(2002):-. |
入库方式： OAI收割
来源：理论物理研究所
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