Cooper electron pair

Cooper electron pair

A Cooper (electron) pair is a quasi-bound state of a pair of two electrons in a superconducting material. The composite entity behaves as a particle, with zero spin and charge twice that of an electron. Cooper pairs carry the current in a superconductor. This effect is most known concerning superconductivity.

A Cooper pair can form in a metal at low temperature. Despite the fact that the electrons Coulomb-repel each other, it may be possible to get an overall attractive force between the two. This is commonly explained in terms of an indirect coupling between the electrons, mediated by the lattice of positive ions.

Cooper pairs are an integral part of the theory of low-temperature superconductors, BCS theory.

ee also

*BCS Theory

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Electron pair — In chemistry, an electron pair consists of two electrons that occupy the same orbital but have opposite spins.Because electrons are fermions, the Pauli exclusion principle forbids these particles from having exactly the same quantum numbers.… …   Wikipedia

  • Cooper pair — In condensed matter physics, a Cooper pair or BCS pair is two electrons (or other fermions) that are bound together at low temperatures in a certain manner first described in 1956 by American physicist Leon Cooper.[1] Cooper showed that an… …   Wikipedia

  • Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …   Wikipedia

  • Électron — Traduction à relire Electron → …   Wikipédia en Français

  • Paire de Cooper — En physique de la matière condensée, une paire de Cooper est le nom donné aux électrons liés entre eux à basses températures d une manière spécifique décrite en 1956 par Leon Cooper[1] Leon Cooper montrait qu une petite interaction arbitraire… …   Wikipédia en Français

  • D. B. Cooper — A 1972 F.B.I. composite drawing of D. B. Cooper Other names Dan Cooper Occupation Unknown Known for …   Wikipedia

  • Coherent state — In quantum mechanics a coherent state is a specific kind of quantum state of the quantum harmonic oscillator whose dynamics most closely resemble the oscillating behaviour of a classical harmonic oscillator system. It was the first example of… …   Wikipedia

  • Coherent states — In quantum mechanics a coherent state is a specific kind of quantum state of the quantum harmonic oscillator whose dynamics most closely resembles the oscillating behaviour of a classical harmonic oscillator. It was the first example of quantum… …   Wikipedia

  • chemical bonding — ▪ chemistry Introduction       any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …   Universalium

  • BCS theory — is a microscopic theory of superconductivity, proposed by Bardeen, Cooper, and Schrieffer. It describes superconductivity as a microscopic effect caused by Bose condensation of pairs of electrons.HistoryBCS theory was developed in 1957 by John… …   Wikipedia