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Magnetic flux quantum

Index Magnetic flux quantum

The magnetic flux, represented by the symbol, threading some contour or loop is defined as the magnetic field multiplied by the loop area, i.e.. [1]

33 relations: Abrikosov vortex, Brian Josephson, Committee on Data for Science and Technology, Conventional electrical unit, Domain wall (magnetism), Elementary charge, Flux pinning, Frequency, Fritz London, Ginzburg–Landau theory, Hertz, Husimi Q representation, Josephson effect, Little–Parks effect, London penetration depth, Macroscopic quantum phenomena, Magnetic domain, Magnetic monopole, Magnetometer, Meissner effect, Phenomenology (particle physics), Planck constant, Quantum Hall effect, Quantum vortex, SQUID, Superconducting coherence length, Superconductivity, Thermodynamics, Topological defect, Type-II superconductor, Volt, Voltage, Weber (unit).

Abrikosov vortex

In superconductivity, an Abrikosov vortex (also called a fluxon) is a vortex of supercurrent in a type-II superconductor theoretically predicted by Alexei Abrikosov in 1957.

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Brian Josephson

Brian David Josephson (born 4 January 1940) is a Welsh theoretical physicist and professor emeritus of physics at the University of Cambridge.

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Committee on Data for Science and Technology

The Committee on Data for Science and Technology (CODATA) was established in 1966 as an interdisciplinary committee of the International Council for Science.

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Conventional electrical unit

A conventional electrical unit (or conventional unit where there is no risk of ambiguity) is a unit of measurement in the field of electricity which is based on the so-called "conventional values" of the Josephson constant and the von Klitzing constant agreed by the International Committee for Weights and Measures (CIPM) in 1988.

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Domain wall (magnetism)

A domain wall is a term used in physics which can have similar meanings in magnetism, optics, or string theory.

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Elementary charge

The elementary charge, usually denoted as or sometimes, is the electric charge carried by a single proton, or equivalently, the magnitude of the electric charge carried by a single electron, which has charge.

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Flux pinning

Flux pinning is the phenomenon where a superconductor is pinned in space above a magnet.

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Frequency

Frequency is the number of occurrences of a repeating event per unit of time.

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Fritz London

Fritz Wolfgang London (March 7, 1900 – March 30, 1954) was a Jewish-German physicist and professor at Duke University.

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Ginzburg–Landau theory

In physics, Ginzburg–Landau theory, often called Landau–Ginzburg theory, named after Vitaly Lazarevich Ginzburg and Lev Landau, is a mathematical physical theory used to describe superconductivity.

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Hertz

The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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Husimi Q representation

The Husimi Q representation, introduced by Kôdi Husimi in 1940, is a quasiprobability distribution commonly used in quantum mechanics to represent the phase space distribution of a quantum state such as light in the phase space formulation.

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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 (JJ), which consists of two superconductors coupled by a weak link.

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Little–Parks effect

The Little–Parks effect was discovered in 1962 by William A. Little and Roland D. Parks in experiments with empty and thin-walled superconducting cylinders subjected to a parallel magnetic field.

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London penetration depth

In superconductors, the London penetration depth (usually denoted as \lambda or \lambda_L) characterizes the distance to which a magnetic field penetrates into a superconductor and becomes equal to e−1 times that of the magnetic field at the surface of the superconductor.

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Macroscopic quantum phenomena

Macroscopic quantum phenomena refer to processes showing quantum behavior at the macroscopic scale, rather than at the atomic scale where quantum effects are prevalent.

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Magnetic domain

A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction.

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Magnetic monopole

A magnetic monopole is a hypothetical elementary particle in particle physics that is an isolated magnet with only one magnetic pole (a north pole without a south pole or vice versa).

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Magnetometer

A magnetometer is an instrument that measures magnetism—either the magnetization of a magnetic material like a ferromagnet, or the direction, strength, or relative change of a magnetic field at a particular location.

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Meissner effect

The Meissner effect (or Meissner–Ochsenfeld effect) is the expulsion of a magnetic field from a superconductor during its transition to the superconducting state.

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Phenomenology (particle physics)

Particle physics phenomenology is the part of theoretical particle physics that deals with the application of theoretical physics to high-energy experiments.

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Planck constant

The Planck constant (denoted, also called Planck's constant) is a physical constant that is the quantum of action, central in quantum mechanics.

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Quantum Hall effect

The quantum Hall effect (or integer quantum Hall effect) is a quantum-mechanical version of the Hall effect, observed in two-dimensional electron systems subjected to low temperatures and strong magnetic fields, in which the Hall conductance undergoes quantum Hall transitions to take on the quantized values where is the channel current, is the Hall voltage, is the elementary charge and is Planck's constant.

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Quantum vortex

In physics, a quantum vortex represents a quantized flux circulation of some physical quantity.

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SQUID

A SQUID (for superconducting quantum interference device) is a very sensitive magnetometer used to measure extremely subtle magnetic fields, based on superconducting loops containing Josephson junctions.

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Superconducting coherence length

In superconductivity, the superconducting coherence length, usually denoted as \xi (Greek lowercase xi), is the characteristic exponent of the variations of the density of superconducting component.

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Superconductivity

Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic flux fields occurring in certain materials, called superconductors, when cooled below a characteristic critical temperature.

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Thermodynamics

Thermodynamics is the branch of physics concerned with heat and temperature and their relation to energy and work.

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Topological defect

In mathematics and physics, a topological soliton or a topological defect is a solution of a system of partial differential equations or of a quantum field theory homotopically distinct from the vacuum solution.

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Type-II superconductor

In superconductivity, a type-II superconductor is characterized by the formation of magnetic vortices in an applied magnetic field.

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Volt

The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.

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Voltage

Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.

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Weber (unit)

In physics, the weber (symbol: Wb) is the SI unit of magnetic flux.

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Redirects here:

Flux quanta, Flux quantization, Flux quantum, Fluxoid, Josephson constant, Magnetic flux quanta, Magnetic-flux quantum.

References

[1] https://en.wikipedia.org/wiki/Magnetic_flux_quantum

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