Low-frequency spins and the ground state in high-T-c cuprates
文献类型：会议论文
| 作者 | Panagopoulos, C; Tallon, JL; Rainford, BD; Cooper, JR; Scott, CA; Xiang, T
|
| 出版日期 | 2003 |
| 会议日期 | JUN 07-08, 2002 |
| 会议地点 | WILLIAMSBURG, VA |
| 关键词 | LIGHTLY DOPED LA2-XSRXCUO4 QUANTUM PHASE-TRANSITIONS AXIS SUPERFLUID RESPONSE COPPER-OXIDE METALS PENETRATION DEPTH ANTIFERROMAGNETIC CORRELATIONS ORDER-PARAMETER STRIPE ORDER CU-63 NQR SUPERCONDUCTORS |
| 卷号 | 126 |
| 期号 | 1-2 |
| DOI | 10.1016/S0038-1098(02)00667-1 |
| 页码 | 47-55 |
| 英文摘要 | We study the spin fluctuations of pure and Zn-substituted high temperature superconductors (HTS) using the muon spin relaxation (muSR) technique. Superconductivity is found to coexist with low frequency spin fluctuations over a large region of the superconducting phase diagram. The characteristic temperature of spin fluctuations detected by muSR decreases with increasing doping and vanishes above a critical doping p(c) approximate to 0.19 where the normal state pseudogap vanishes. Furthermore, it is at pc that our penetration depth studies show an abrupt change in the doping dependence of the superfluid density, p(s.) For p > p(c) the absolute value of p(s) is large and nearly independent of carrier concentration whereas for p < p(c) it drops rapidly, signalling a crossover to weak superconductivity. These results are discussed in terms of a quantum transition involving fluctuating short-range magnetic order that separates the superconducting phase diagram of HTS into two distinct ground states. (C) 2003 Elsevier Science Ltd. All rights reserved. |
| 会议录 | SOLID STATE COMMUNICATIONS
 |
| 会议录出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 会议录出版地 | OXFORD |
| 语种 | 英语 |
| URL标识 | 查看原文 |
| ISSN号 | 0038-1098 |
| WOS研究方向 | Physics |
| 源URL | [http://ir.itp.ac.cn/handle/311006/23735]  |
| 专题 | SCI会议论文 |
| 作者单位 | 1.Univ Cambridge, Interdisciplinary Res Ctr Superconductiv, Cambridge CB3 0HE, England 2.Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England 3.Ind Res Ltd, Lower Hutt, New Zealand 4.Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England 5.Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Panagopoulos, C,Tallon, JL,Rainford, BD,et al. Low-frequency spins and the ground state in high-T-c cuprates[C]. 见:. WILLIAMSBURG, VA. JUN 07-08, 2002. |
入库方式： OAI收割
来源：理论物理研究所
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