Prefer a chat interface with context about you and your work?
Observation of a controllable<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>π</mml:mi></mml:math>junction in a 3-terminal Josephson device
Recently Baselmans et al. [Nature, (London) $397,$ 43 (1999)] showed that the direction of the supercurrent in a superconductor/normal/superconductor Josephson junction can be reversed by applying, perpendicularly to the supercurrent, a sufficiently large control current between two normal reservoirs. The unusual behavior of their 4-terminal device (called a controllable $\ensuremath{\pi}$ …