London penetration depth

From here the physical meaning of the London penetration depth can perhaps most easily be discerned.

The thickness of this layer is determined by the so-called London penetration depth.

Near the surface, within a distance called the London penetration depth, the magnetic field is not completely cancelled.

The length is identical with the London penetration depth in the theory of superconductivity.

For most superconductors, the London penetration depth is on the order of 100 nm.

The supercurrents decay on the distance about (London penetration depth) from the core.

This value is the London penetration depth.

In the Meissner phase, a screening current flows within the London penetration depth.

London penetration depth can be measured by muon spin spectroscopy when the superconductor doesn't have an intrinsic magnetic constitution.

The London penetration depth results from considering the London equation and Ampère's circuital law.

The ratio of the London penetration depth λ to the superconducting coherence length ξ determines whether a superconductor is type-I or type-II.

The Meissner effect is due to currents in a thin surface layer, whose thickness, the London penetration depth, can be calculated from a simple model (the Ginzburg-Landau theory).

The London penetration depth is one of the most important parameters characterizing a superconductor because its inverse square provides a measure of the density n of Cooper pairs.

More generally, a higher temperature and a stronger magnetic field lead to a smaller fraction of the electrons in the superconducting band and consequently a longer London penetration depth of external magnetic fields and currents.

When a superconductor is placed in a weak external magnetic field H, the field penetrates the superconductor only a small distance λ, called the London penetration depth, decaying exponentially to zero within the bulk of the material.

The inverse square of the London penetration depth appears to be proportional to the critical temperature for a large number of underdoped cuprate superconductors, but the constant of proportionality is different for hole- and electron-doped cuprates.

The magnetic field through such a whisker and its neighborhood, which has size of the order of London penetration depth ( 100 nm), is quantized because of the phase properties of the magnetic vector potential in quantum electrodynamics.

In superconductors, the London penetration depth (usually denoted as or ) characterizes the distance to which a magnetic field penetrates into a superconductor and becomes equal to 1/e times that of the magnetic field at the surface of the superconductor.

The Meissner effect does not cause the field to be completely ejected but instead the field penetrates the superconductor but only to a very small distance, characterized by a parameter λ, called the London penetration depth, decaying exponentially to zero within the bulk of the material.