Title :
Resonant tunneling transport in YBaCuO/PrBaCuO/YBaCuO edge-type Josephson junctions
Author :
Satoh, T. ; Kupriyanov, M.Y. ; Tsai, J.S. ; Hidaka, M. ; Tsuge, H.
Author_Institution :
Fundamental Res. Labs., NEC Corp., Tsukuba, Japan
fDate :
6/1/1995 12:00:00 AM
Abstract :
YBaCuO/PrBaCuO/YBaCuO edge-type Josephson junctions were fabricated and their transport properties were studied. Josephson effect in these structure was confirmed by the observation of microwave induced Shapiro steps and periodic magnetic field dependence of the critical current. Normal electron transport in the junctions was well explained by Glazman and Matveev´s theory for hopping transport via localized states. In addition, the supercurrent transport in PrBaCuO is possibly supported by the resonant tunneling via the localized states. We estimated the density of the localized states to be 10/sup 16/ cm/sup -3/.<>
Keywords :
Josephson effect; barium compounds; critical currents; high-temperature superconductors; hopping conduction; praseodymium compounds; yttrium compounds; YBaCuO-PrBaCuO-YBaCuO; critical current; edge-type Josephson junctions; hopping transport; localized states; magnetic field; microwave induced Shapiro steps; normal electron transport; resonant tunneling; supercurrent transport; Critical current; Electrons; High temperature superconductors; Josephson effect; Josephson junctions; Magnetic fields; Resonant tunneling devices; Superconducting epitaxial layers; Superconducting microwave devices; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
