Flux quantization

Flux quantization

Flux quantization is a quantum phenomenon in which the magnetic field is quantized in the unit of h / 2e,also known variously as flux quanta, fluxoids, vortices or fluxons.

Flux quantization occurs in Type II superconductors subjected to a magnetic field. Below a critical field Hc1, all magnetic flux is expulsed according to the Meissner effect and perfect diamagnetism is observed, exactly as in a Type I superconductor. Up to a second critical field value, Hc2, flux penetrates in discrete units while the bulk of the material remains superconducting. Both critical fields are temperature dependent, and tabulated values are the zero-temperature extrapolation unless otherwise noted.

ee also

*Flux pinning
*Magnetic flux quantum


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Flux — This article is about the concept of flux in science and mathematics. For other uses of the word, see Flux (disambiguation). In the various subfields of physics, there exist two common usages of the term flux, both with rigorous mathematical… …   Wikipedia

  • Magnetic flux quantum — Values (CODATA 2006)[1] Units Φ0 2.067 833 667(52)×10−15 Wb KJ 483 597.891(12)×109 Hz/V KJ–90 483 597.9 …   Wikipedia

  • Landau quantization — in quantum mechanics is the quantization of the cyclotron orbits of charged particles in magnetic fields. As a result, the charged particles can only occupy orbits with discrete energy values, called Landau levels. The Landau levels are… …   Wikipedia

  • superconductivity — superconduction /sooh peuhr keuhn duk sheuhn/, n. superconductive /sooh peuhr keuhn duk tiv/, superconducting, adj. superconductor /sooh peuhr keuhn duk teuhr/, n. /sooh peuhr kon deuhk tiv i tee/, n. Physics. the phenomenon of almost perfect… …   Universalium

  • High-temperature superconductivity — Unsolved problems in physics What causes superconductivity at temperatures above 50 kelvin? High temperature superconductors (abbreviated high Tc or HTS) are materials that have a superconducting transition temperature (Tc) above 30 K… …   Wikipedia

  • Nina Byers — (born January 19, 1930)[1] is a theoretical physicist, Research Professor and Professor of Physics emeritus in the Department of Physics and Astronomy, UCLA. Scientific contributions have mainly been in particle physics and the theory of… …   Wikipedia

  • КВАНТОВАНИЕ МАГНИТНОГО ПОТОКА — дискретность значений магнитного потока Ф, проходящего через неодносвязный сверхпроводник (напр., сверхпроводящее кольцо) [1]. Магн. поток имеет значения, кратные кванту потока Ф 0=h/2е=2,0678506.10 15 Вб. Экспериментально К. м. п. было… …   Физическая энциклопедия

  • Leon Cooper — Infobox Scientist box width = 300px name = Leon Cooper imagesize = 120px birth date = birth date and age|1930|2|28 birth place = New York City, U.S. residence = United States nationality = United States field = Physics alma mater = Columbia… …   Wikipedia

  • Lev Pavlovich Rapoport — (Russian language: Лев Павлович Рапопорт) (January 13, 1920 ndash; September 15, 2000) was well known for his pioneering works in nuclear and atomic theoretical physics. Early work His first works in this field concerned the simplest of atoms,… …   Wikipedia

  • Magnetic monopole — It is impossible to make magnetic monopoles from a bar magnet. If a bar magnet is cut in half, it is not the case that one half has the north pole and the other half has the south pole. Inst …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”