Title :
Towards the quantitative theory of the high-Tc Josephson junctions
Author :
Kupriyanov, M.Yu. ; Likharev, K.K.
Author_Institution :
Dept. of Phys., Moscow State Univ., USSR
fDate :
3/1/1991 12:00:00 AM
Abstract :
The possible reasons leading to the reduction of the characteristic voltage VC of the high-temperature-superconductor (HTS) Josephson Junctions are discussed. It is emphasized that the electron scattering at the superconductor-normal-metal (SN) boundaries plays a decisive role in HTS weak links. Rough estimates of the parameter γB describing the SN boundary transparency were obtained. Calculations of the properties of the SNS sandwiches, variable thickness bridges, and SNIS´ tunnel junctions within the framework of BCS-based theories of the Josephson effect have been carried out using models which take into account the low transparency of HTS/N-metal interfaces, and possible values of their IcRN product are estimated
Keywords :
BCS theory; Josephson effect; high-temperature superconductors; superconducting junction devices; BCS-based theories; boundary transparency; characteristic voltage; electron scattering; high-Tc Josephson junctions; high-temperature-superconductor; models; quantitative theory; sandwiches; superconductor-normal metal boundaries; tunnel junctions; variable thickness bridges; weak links; Bridge circuits; Electrons; High temperature superconductors; Josephson effect; Josephson junctions; Parameter estimation; Scattering; Superconducting devices; Tin; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
