Dynamics of the superconducting mixed state in YBa₂Cu₃O_7-δ/PrBa₂Cu₃O_7-δ superlattices in radio frequency regime

Abstract

Epitaxial multilayers of YBa₂Cu₃O_7-δ and P₁Ba₂Cu₃O_7-δ have been deposited on (100) cut SrTiO₃ substrates using the technique of pulsed laser deposition. Standard -2 X-ray diffraction measurements on the films showed excellent superlattice reflections. The mixed state of these superlattices has been probed through measurements of radio frequency penetration depth (λ) as a function of temperature (T), magnetic field (H) and it's orientation ( ) with respect to the planes of the superlattices. These data reflect the two-dimensional nature of the mixed state in these systems.