Josephson nonequilibrium phenomena under current injection in superconducting three-terminal stacked devices
نویسندگان
چکیده
منابع مشابه
Josephson nonequilibrium phenomena under current injection in superconducting three-terminal stacked devices
Three-terminal superconducting tunnel devices offer a powerful tool to investigate nonequilibrium phenomena in superconductors. We study the role of the proximity effect in a Nb/Al bilayer forming the intermediate electrode of a stacked structure configuration. The spatial profile of the pair potential along the common electrode and the effective density of states near the detector tunnel barri...
متن کاملSuperconducting memories employing Josephson devices
Experimental super conducting Josephson devices being investigated for use in digital logic and memory circuits have been demonstrated to switch in the 10 to 100 picosecond (1 picosecond = 10-12 sec) range. Projections based on the operation of individual logic circuits indicate that they may surpass semiconductor circuits in very high performance CPU's. This potential is based on the fact that...
متن کاملSuperconducting quantum interference devices based set-up for probing current noise and correlations in three-terminal devices.
We have implemented a new experimental set-up for precise measurements of current fluctuations in three-terminal devices. The system operates at very low temperatures (30 mK) and is equipped with three superconducting quantum interference devices (SQUIDs) as low noise current amplifiers. A SQUID input coil is connected to each terminal of a sample allowing the acquisition of time-dependent curr...
متن کاملAndreev-level spectroscopy and Josephson-current switching in a three-terminal Josephson junction
We calculate the electrical currents through a superconductor-insulator-superconductor junction which is also weakly coupled to a normal-metal side probe. The voltage V applied to the normal-metal terminal controls the occupation of Andreev energy levels En , and therefore controls the Josephson current flowing through these levels. Whenever the probe voltage crosses an Andreev level, the Josep...
متن کاملNonequilibrium Josephson current in ballistic multiterminal SNS-junctions
We study the nonequilibrium Josephson current in a long two-dimensional ballistic SNS-junction with a normal reservoir coupled to the normal part of the junction. The current for a given superconducting phase difference φ oscillates as a function of voltage applied between the normal reservoir and the SNS-junction. The period of the oscillations is πh̄vF /L, with L the length of the junction, an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2002
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.66.174509