Low-frequency spins and the ground state in high-T(c) cuprates
文献类型：期刊论文
| 作者 | Panagopoulos, C; Tallon, JL; Rainford, BD; Cooper, JR; Scott, CA; Xiang, T ; Panagopoulos, C , Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
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| 刊名 | SOLID STATE COMMUNICATIONS
 |
| 出版日期 | 2003 |
| 卷号 | 126期号:40910页码:47-55 |
| 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 |
| ISSN号 | 0038-1098 |
| 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13352]  |
| 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 | Panagopoulos, C , Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England. |
| 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[J]. SOLID STATE COMMUNICATIONS,2003,126(40910):47-55. |
| APA | Panagopoulos, C.,Tallon, JL.,Rainford, BD.,Cooper, JR.,Scott, CA.,...&Panagopoulos, C , Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England..(2003).Low-frequency spins and the ground state in high-T(c) cuprates.SOLID STATE COMMUNICATIONS,126(40910),47-55. |
| MLA | Panagopoulos, C,et al."Low-frequency spins and the ground state in high-T(c) cuprates".SOLID STATE COMMUNICATIONS 126.40910(2003):47-55. |
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来源：理论物理研究所
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