For 10 points, name this effect, a form of tunneling between two superconductors named for a Welsh physicist.
Experimental realization of this effect was realized by Rowell and Anderson using a thin film of tin oxide. The phase of this phenomenon in one system can be calculated from the perturbed sine-Gordon equation. The arm of the quantum metrology triangle linking the variable U with the frequency is bridged by this effect, while the other two arms bridged by the single electron transport effect and the Hall effect. Analogizing this effect to a damped pendulum gives a damping equal to the Stewart-McComber parameter. The value h (*) over 2 e is the namesake constant of this phenomenon, and two devices using this effect are placed in a loop to form a highly sensitive magnetometer called a SQUID. In this effect, a supercurrent tunnels through an insulator. For 10 points, name this effect, a form of tunneling between two superconductors named for a Welsh physicist.
Experimental realization of this effect was realized by Rowell and Anderson using a thin film of tin oxide.
Josephson Effect