Analysis on Electric Field Effect in Al/SrTiO3/YBa2Cu3Oy Structure

Abstract
Planar-type Al/(100)SrTiO3/(001)YBa2Cu3O y metal-insulator-superconductor field-effect transistors (MISFETs) were investigated experimentally and theoretically. The applied gate field induces the change of the carrier concentration in YBa2Cu3O y channel (or conducting layer thickness), which in turn modulates the critical current J c through the flux-creep model and flux-flow resistivity ρt through the Bardeen-Stephen model. Theoretical results explained, to a certain extent, the observed field effect in the MISFET semiquantitatively.