Josephson junction


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Related to Josephson junction: Josephson tunneling

Josephson junction

[′jō·səf·sən ‚jəŋk·shən]
(cryogenics)
A thin insulator separating two superconducting materials; it displays the Josephson effect.

Josephson Junction

(electronics)
A type of electronic circuit capable of switching at very high speeds when operated at temperatures approaching absolute zero. The low power dissipation of a Josepshson Junction makes it useful in high density computer circuits.

Josephson junction

An ultra-fast switching technology that uses superconductor materials, originally conceived by Brian Josephson. Circuits are immersed in liquid helium to obtain near-absolute zero degrees required for operation. Switching takes place in a few picoseconds. Although Josephson junctions have not materialized for computer circuits, they have been used thus far in medical instruments that sense brain waves.
References in periodicals archive ?
When multiple domains exist, gradients between domains of differing phase [phi] are accompanied by currents that tunnel between the domains as the spaces between the domains form Josephson junctions [14].
389), certain types of electrical circuits, and arrays of superconducting devices known as Josephson junctions.
Such insights may also suggest ways of improving current methods of fabricating Josephson junctions, which normally involve the establishment of tunneling between adjacent superconducting grains or crystals (SN: I/11/92, p.
8] by applying the same microwave radiation to pairs of dissimilar Josephson junctions and comparing the junction voltages.
General information: The primary volt is derived at present from Josephson Junctions and maintained in the metrology laboratories with Weston Cells.
The ten papers in this collection review advances in superconducting intercalated graphite, Josephson junctions, phase transitions of spin-triplet ferromagnetic superconductors, and extrinsic pseudogaps.
These crystals comprise stacks of so-called Josephson junctions that exhibit a unique electrical property: when an external voltage is applied, an alternating current will flow back and forth across the junctions at a frequency proportional to the strength of the voltage; this phenomenon is known as the Josephson effect.
Researchers at NIST have demonstrated that molybdenum di-silicide is an excellent normal-metal material for junction barriers in high-density arrays of superconductor-normal-metal-superconductor (SNS) Josephson junctions.
Earlier efforts to develop a computer using superconducting Josephson junctions failed, partly because the researchers--following standard practice in semiconductors--chose to encode binary data as high and low voltages,.
In the late 1960s, the relationship between voltage and frequency was measured precisely with newly discovered superconductor devices called Josephson junctions.
This is a significant milestone toward creating lumped arrays of Josephson junctions for ac voltage standards.