On the feasibility of studying vortex noise in 2D superconductors with cold atoms

Details On the feasibility of studying vortex noise in 2D superconductors with cold atoms On the feasibility of studying vortex noise in 2D superconductors with cold atoms

2007-02-26

arxiv.org/abs/cond-mat/0702566v1

Physics

Condensed Matter

Other Condensed Matter

4 pages, 1 figure

Scientific paper

10.1103/PhysRevA.75.064901

We investigate the feasibility of using ultracold neutral atoms trapped near a thin superconductor to study vortex noise close to the Kosterlitz-Thouless-Berezinskii transition temperature. Alkali atoms such as rubidium probe the magnetic field produced by the vortices. We show that the relaxation time $T_1$ of the Zeeman sublevel populations can be conveniently adjusted to provide long observation times. We also show that the transverse relaxation times $T_2$ for Zeeman coherences are ideal for studying the vortex noise. We briefly consider the motion of atom clouds held close to the surface as a method for monitoring the vortex motion.

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