Definitions for josephson effect
joseph·son ef·fect

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1. Josephson effectnoun

   the zero-voltage current of paired electrons through a weak connection between superconductors

2. Etymology: From Brian David Josephson Welsh physicist

WikipediaRate this definition:0.0 / 0 votes

1. Josephson effect

   In physics, the Josephson effect is a phenomenon that occurs when two superconductors are placed in proximity, with some barrier or restriction between them. It is an example of a macroscopic quantum phenomenon, where the effects of quantum mechanics are observable at ordinary, rather than atomic, scale. The Josephson effect has many practical applications because it exhibits a precise relationship between different physics quantities, such as voltage and frequency, facilitating highly accurate measurements. The Josephson effect produces a current, known as a supercurrent, that flows continuously without any voltage applied, across a device known as a Josephson junction (JJ). These consist of two or more superconductors coupled by a weak link. The weak link can be a thin insulating barrier (known as a superconductor–insulator–superconductor junction, or S-I-S), a short section of non-superconducting metal (S-N-S), or a physical constriction that weakens the superconductivity at the point of contact (S-c-S). Josephson junctions have important applications in quantum-mechanical circuits, such as SQUIDs, superconducting qubits, and RSFQ digital electronics. The NIST standard for one volt is achieved by an array of 20,208 Josephson junctions in series.

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1. Josephson effect

   The Josephson effect is the phenomenon of supercurrent — i.e. a current that flows indefinitely long without any voltage applied — across a device known as a Josephson junction, which consists of two superconductors coupled by a weak link. The weak link can consist of a thin insulating barrier, a short section of non-superconducting metal, or a physical constriction that weakens the superconductivity at the point of contact. The Josephson effect is an example of a macroscopic quantum phenomenon. It is named after the British physicist Brian David Josephson, who predicted in 1962 the mathematical relationships for the current and voltage across the weak link. The DC Josephson effect had been seen in experiments prior to 1962, but had been attributed to "super-shorts" or breaches in the insulating barrier leading to the direct conduction of electrons between the superconductors. These prior claims are controversial and the first paper to claim the discovery of Josephson's effect, and to make the requisite experimental checks, was that of Anderson and Rowell. These authors were awarded patents on the effects which were never enforced but also never challenged. Before Josephson's prediction, it was only known that normal electrons can flow through an insulating barrier, by means of quantum tunneling. Josephson was the first to predict the tunneling of superconducting Cooper pairs. For this work, Josephson received the Nobel prize in physics in 1973. Josephson junctions have important applications in quantum-mechanical circuits, such as SQUIDs, superconducting qubits, and RSFQ digital electronics.

How to pronounce josephson effect?

1. Alex

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   David

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   Mark

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   Daniel

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Numerology

1. Chaldean Numerology

   The numerical value of josephson effect in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of josephson effect in Pythagorean Numerology is: 4

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Josephson_Effect
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Josephson_Effect
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=josephson effect