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Panagopoulos, C; Tallon, JL; Rainford, BD; Cooper, JR; Scott, CA; Xiang, T; Panagopoulos, C , Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
Low-frequency spins and the ground state in high-T(c) cuprates
Source PublicationSOLID STATE COMMUNICATIONS
KeywordLightly Doped La2-xsrxcuo4 Quantum Phase-transitions Axis Superfluid Response Copper-oxide Metals Penetration Depth Antiferromagnetic Correlations Order-parameter Stripe Order Cu-63 Nqr Superconductors
AbstractWe 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.
2003
ISSN0038-1098
Volume126Issue:40910Pages:47-55
Subject AreaPhysics
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13352
Collection理论物理所科研产出_SCI论文
Corresponding AuthorPanagopoulos, C , Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
Recommended Citation
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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