Critical temperature oscillations in magnetically coupled superconducting mesoscopic loops
Superconductivity
2009-11-07 v1 Mesoscale and Nanoscale Physics
Abstract
We study the magnetic interaction between two superconducting concentric mesoscopic Al loops, close to the superconducting/normal phase transition. The phase boundary is measured resistively for the two-loop structure as well as for a reference single loop. In both systems Little-Parks oscillations, periodic in field are observed in the critical temperature Tc versus applied magnetic field H. In the Fourier spectrum of the Tc(H) oscillations, a weak 'low frequency' response shows up, which can be attributed to the inner loop supercurrent magnetic coupling to the flux of the outer loop. The amplitude of this effect can be tuned by varying the applied transport current.
Cite
@article{arxiv.cond-mat/0105454,
title = {Critical temperature oscillations in magnetically coupled superconducting mesoscopic loops},
author = {M. Morelle and V. Bruyndoncx and R. Jonckheere and V. V. Moshchalkov},
journal= {arXiv preprint arXiv:cond-mat/0105454},
year = {2009}
}
Comments
9 pages, 7 figures, accepted for publication in Phys. Rev. B