Semiconductor - Superconductor Heterostructures

Non-equilibrium superconductivity in Nb-InAs-Nb junctions

 

 

At high frequencies and relatively high temperature, the AC Josephson effect in a mesoscopic Nb-InAs-Nb, superconductor-normal-superconductor, junction is dominated by a Shapiro step corresponding to twice the Josephson frequency. This is a result of non-equilibrium, mesoscopic, superconductivity.

See Konrad Lehnert's page