JosephsonKontakte
JosephsonKontakte, or Josephson junctions, are a fundamental superconducting device consisting of two superconductors separated by a thin insulating or metallic barrier. This structure allows for quantum mechanical phenomena to manifest at macroscopic levels. When a supercurrent flows across the junction, it exhibits unique electrical properties dictated by the Josephson effects. The first Josephson effect describes the flow of a DC supercurrent without any voltage drop as long as the current is below a critical value. Beyond this critical current, a voltage appears across the junction. The second Josephson effect relates the AC supercurrent to the voltage across the junction and the phase difference of the superconducting wave functions on either side.
These junctions are named after Brian Josephson, who theoretically predicted their behavior in 1962. His work
Josephson junctions have a wide range of applications in scientific research and technology. They are crucial