d-Wave Bose–Einstein condensation and the London penetration depth in superconducting cuprates

Penetration depth of a superconducting superlattice.

We have measured the magnetic-flux expulsion of a superconducting superlattice and related it to the Meissner penetration depth. The temperature dependence of the penetration depth is in quantitative agreement with theoretical expectation based on mean-field theory. The zerotemperature penetration depth is found in excellent, quantitative agreement without adjustable parameters with theoretical...

Determination of the magnetic field penetration depth in YBa2Cu307-d superconducting films by polarized neutron reflectometry

Polarized neutron reflectometry was used for the direct measurement of the magnetic-field penetration depth in a high-temperature (HT,) superconducting film. Two scattering geometries were used. The deduced neutron scattering length density profile gave an exact picture of the composition of the film. The fit to the spin-asymmetry yielded a magnetic-penetration depth of 1400 2 100 A at a temper...

Single Vortex Pinning and Penetration Depth in Superconducting NdFeAsO1-xFx

Single-vortex pinning and penetration depth in superconducting NdFeAsO[subscript 1x]F[subscript x]. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We use a magnet...

Quasiparticle decay effects in the superconducting density of states: Evidence for d-wave pairing in the cuprates.

Modulated pairs in superconducting cuprates.

H igh-temperature cuprate superconductors are well known to the general science community for the simple reason that their transition temperature, Tc, is much higher than that of other superconductors. Perhaps less well known is the fact that Tc varies dramatically from one family of cuprates to the next. Understanding this dependence of Tc on crystalline structure would obviously be key to des...