Magnetic imaging of Pearl vortices

Details Magnetic imaging of Pearl vortices Magnetic imaging of Pearl vortices

2004-02-27

arxiv.org/abs/cond-mat/0402667v1

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures. to be published in Physical Review Letters

Scientific paper

We have used scanning SQUID magnetometry to image vortices in ultra-thin [Ba$_{0.9}$Nd$_{0.1}$CuO$_{2+x}$]$_m$/[CaCuO$_2$]$_n$ (CBCO) high temperature superconductor samples, with as few as three superconducting CuO$_2$ planes. The Pearl lengths ($\Lambda = 2\lambda_{L}^2/d$, $\lambda_{L}$ the London penetration depth, $d$ the superconducting film thickness) in these samples, as determined by fits to the vortex images, agree with those by local susceptibility measurements, and can be as long as 1mm. The in-plane penetration depths $\lambda_{ab}$ inferred from the Pearl lengths are longer than many bulk cuprates with comparable critical temperatures. We speculate on the causes of the long penetration depths, and on the possibility of exploiting the unique properties of these superconductors for basic experiments.

Affiliated with

Also associated with

No associations

Rating

Magnetic imaging of Pearl vortices does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Magnetic imaging of Pearl vortices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic imaging of Pearl vortices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-293769