1/f noise from vortex-antivortex annihilation
Superconductivity
2007-05-23 v1 High Energy Physics - Lattice
Abstract
The magnetic flux noise induced by vortices in thin superconducting films is studied. Rigid vortices in thin films as well as pancake vortices in the pancake gas regime are addressed. The vortex dynamics is described by a Feynman path integral which fully accounts for the balance between vortex entropy and vortex energetics. We find that vortex pair creation (annihilation) in the presence of pinning is a natural source for noise with a 1/f spectrum.
Cite
@article{arxiv.cond-mat/0511637,
title = {1/f noise from vortex-antivortex annihilation},
author = {K. Langfeld and D. Doenitz and R. Kleiner and D. Koelle},
journal= {arXiv preprint arXiv:cond-mat/0511637},
year = {2007}
}
Comments
4 pages, 1 figure; submitted to Physical Review