Speaker
Abstract
Implantation of dielectric nanoparticles or point-like radiation defects in the interior of high-Tc superconductor (HTS )can significantly improve its characteristics at microwave frequencies. Namely, this nanotechnological treatment allows to decrease the microwave surface resistance, Rs , in the Meissner state and eliminate Abrikosov vortices oscillations and related energy losses in the mixes state of the film, thus decreasing the Abrikosov vortices contribution to the Rs value in the mixed state of HTS film. In the present work rf- oscillations of elastic vortex strings, as well as their contribution to the microwave surface resistance, are considered for the mixed state of superconducting film with implanted nanoparticles, providing point-like and extended linear pinning sites for oscillating vortices.
