Electrostatics of Vortices in Type II Superconductors

Details Electrostatics of Vortices in Type II Superconductors Electrostatics of Vortices in Type II Superconductors

1996-04-10

arxiv.org/abs/cond-mat/9604060v1

Physics

Condensed Matter

9 pages, latex

Scientific paper

10.1103/PhysRevLett.77.566

In a type II superconductor the gap variation in the core of a vortex line induces a local charge modulation. Accounting for metallic screening, we determine the line charge of individual vortices and calculate the electric field distribution in the half space above a field penetrated superconductor. The resulting field is that of an atomic size dipole ${\bf d} \sim e a_{{\rm B}} {\bf {\hat z}}$, $a_{{\rm B}} = \hbar^2/m e^2$ is the Bohr radius, acting on a force microscope in the pico to femto Newton range.

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