Copper Oxide Superconducting/Antiferromagnetic Interface

摘要

Superconducting Nb/Au/Ca_(1-x)Sr_xCuO_2/YBa_2Cu_3O_7 mesa-heterostructures were investigated. Dependencies of electrical parameters versus inverse capacitance were measured. A band diagram which takes into account an accumulation of holes in Ca_(1-x)Sr_xCuO_2 interlayer and band bending due to difference of work functions was proposed. The dependencies of electrical parameters were analyzed by examining the quasipartical and superconducting currents.