[joh-zuh f-suh n, -suh f-]
- a high-speed switch, used in experimental computers, that operates on the basis of a radiative phenomenon (Jo·sephson effect) exhibited by a pair of superconductors separated by a thin insulator.
Origin of Josephson junction
1965–70; after B. D. Josephson, who predicted the existence of the effect
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- physics any one of the phenomena which occur when an electric current passes through a very thin insulating layer between two superconducting substances. The applications include the very precise standardization of the volt
C20: named after Brian David Josephson (born 1940), Welsh physicist; shared the Nobel prize for physics in 1973
- An effect in which electron pairs undergo quantum tunneling with zero resistance across a barrier separating two superconductors. The effect can be manipulated by varying a magnetic field at the junction where the tunneling occurs and is being investigated as a possible part of the design of high-speed switches for computer microprocessors. The Josephson effect is named after its discoverer, Welsh physicist Brian David Josephson (b. 1940).
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.