Nonlinearities in Microwave Superconductivity
  The research is focused on the modeling of nonlinear properties of High Temperature Superconducting (HTS) thin films, using Bardeen, Cooper, Schrieffer and Lumped Element Circuit theories, with purpose to enhance microwave power handling capabilities of microwave filters and optimize design of microwave circuits in micro- and nano- electronics. 
Dimitri O. Ledenyov and Viktor O. Ledenyov
cond-mat.supr-con