Muon-spin-rotation measurements of the London penetration depths in
- 1 November 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 42 (13), 8019-8029
- https://doi.org/10.1103/physrevb.42.8019
Abstract
Muon-spin-rotation (μSR) experiments on a high-quality sintered sample [x=6.970(1)] were performed, in order to obtain an accurate knowledge of the magnitude and the temperature dependence of the magnetic penetration depth in this copper oxide superconductor. Special attention was given to the data analysis. In particular, the systematic errors introduced by different types of analyses were estimated. Our results show that the temperature dependence of the effective penetration depth into the sintered sample is well described by the two-fluid model, with (0)=155(10) nm. This behavior of (T) is consistent with conventional s-wave pairing. With the anisotropy ratio γ=/=5(1) measured in a previous μSR experiment, the penetration depths (0)=130(10) nm and (0)=500–800 nm (parallel and perpendicular to the planes, respectively) were extracted. Our results are compared with those obtained by other experimental techniques and theoretical predictions.
Keywords
This publication has 45 references indexed in Scilit:
- Measurement of the London penetration depths in YBa2Cu3OPhysica C: Superconductivity and its Applications, 1989
- Magnetic field penetration depth of polycrystalline (Y,Gd), grain-aligned , and single-crystalPhysical Review B, 1989
- Greene, Krusin-Elbaum, and Malozemoff replyPhysical Review Letters, 1989
- Magnetic penetration depth ofPhysical Review Letters, 1989
- Temperature dependence of lower critical fields in Y-Ba-Cu-O crystalsPhysical Review B, 1989
- Direct Measurement of the Temperature-Dependent Magnetic Penetration Depth in Y-Ba-Cu-O CrystalsPhysical Review Letters, 1989
- Magnetic penetration depth in single-crystalPhysical Review B, 1989
- µSR STUDIES OF HIGH TC SUPERCONDUCTIVITYLe Journal de Physique Colloques, 1988
- Systematic variation of magnetic-field penetration depth in high-superconductors studied by muon-spin relaxationPhysical Review B, 1988
- Temperature dependence of the magnetic penetration depth in the high- superconductor : Evidence for conventional -wave pairingPhysical Review B, 1987