Magnetic imaging of Pearl vortices

F. Tafuri, J. R. Kirtley, P. G. Medaglia +2

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…