| Microscopic origin of local moments in a zinc-doped high-T-c superconductor | |
| Qi, XL ; Weng, ZY | |
| 2010-05-06 ; 2010-05-06 | |
| 关键词 | D-WAVE SUPERCONDUCTOR Y-89 NMR PROBE J MODEL IMPURITY STATES SCATTERING Physics, Condensed Matter |
| 中文摘要 | The formation of a local moment around a zinc impurity in the high-T-c cuprate superconductors is studied within the framework of the bosonic resonating-valence-bond (RVB) description of the t-J model. A topological origin of the local moment has been shown based on the phase string effect in the bosonic RVB theory. It is found that such an S=1/2 moment distributes near the zinc in a form of staggered magnetic moments at the copper sites. The corresponding magnetic properties, including NMR spin-relaxation rate, uniform spin susceptibility, and dynamic spin susceptibility, etc., calculated based on the theory, are consistent with the experimental measurements. Our work suggests that the zinc substitution in the cuprates provides important experimental evidence for the RVB nature of local physics in the original (zinc-free) state. |
| 语种 | 英语 ; 英语 |
| 出版者 | AMERICAN PHYSICAL SOC ; COLLEGE PK ; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/14817]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Qi, XL,Weng, ZY. Microscopic origin of local moments in a zinc-doped high-T-c superconductor[J],2010, 2010. |
| APA | Qi, XL,&Weng, ZY.(2010).Microscopic origin of local moments in a zinc-doped high-T-c superconductor.. |
| MLA | Qi, XL,et al."Microscopic origin of local moments in a zinc-doped high-T-c superconductor".(2010). |
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