1) is the Ginzburg-Landau equation that models supercurrent
density for extreme-type-II superconductors.
Such a strong diamagnetism, due to the expulsion of magnetic flux by a supercurrent
, is a significant signal of the onset of superconductivity.
His theory predicted the properties of a supercurrent
through tunnel barriers known as the Josephson effect.
a nearby shortwave transmitter), mechanical vibrations (lawn mowers, local construction), or a coincidence with magnet supercurrent
fluctuations (recorded separately).
Josephson's theoretical predictions of the properties of supercurrent
through a tunnel barrier earned him the Nobel Prize in 1973.
The key was learning which part of powder-in-tube wire actually carries the supercurrent
," said N.
At about the same time supercurrent
junctions were found to exhibit the Josephson effect, namely, the flow of an electron-pair tunneling current through an insultor separating two superconductors.
Along with four other scientists, the Cardiff physicist won the Nobel Prize for physics in 1973 for his theory on predicting the properties of a supercurrent
through tunnel barriers - known as the "Josephson effect".
However, in a type II superconductor, flux lines can shift in position, or "creep," interfering with supercurrent