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Cooper pair

noun

Etymology

Named after American physicist Leon Neil Cooper.

Definitions

  1. A pair of electrons (or other fermions), of opposite spin, whose theorised behaviour is…

    A pair of electrons (or other fermions), of opposite spin, whose theorised behaviour is the basis of the BCS theory of superconductivity.

    • The fundamental requirement for superconductivity is the existence of Cooper pairs.
    • This is because a superconducting state is composed of extended Cooper pairs. A coherence length, #92;xi, describes the extension length of a Cooper pair over which the two quasiparticles remain bound as a pair.
    • This is a direct macroscopic manifestation of the presence of a condensate of Cooper pairs in a superconductor.

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sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA