Definition of Cooper pair in US English:

Cooper pair


  • 1A loosely bound pair of electrons with opposite spins and moving with the same speed in opposite directions, held to be responsible for the phenomenon of superconductivity.

    • ‘The magnetic field pulls apart the two electrons forming Cooper pairs and also rotates their spins.’
    • ‘Electrons in these Cooper pairs have opposite values of momentum, meaning that the pairs themselves generally have zero orbital angular momentum.’
    • ‘They learned that they could use a pair of atoms to simulate the electrons of a Cooper pair.’
    • ‘These electron pairs are called Cooper pairs, and as described by Schrieffer, they condense into a single state and flow as a totally directionless fluid.’
    • ‘In that model, pairs of electrons with opposite spin form so-called Cooper pairs with zero total spin.’
    1. 1.1 A loosely bound pair of atoms in a superfluid.
      • ‘Just as in Bose-Einstein condensation, the Cooper pairs can fall into a single quantum state and thus cause a phase transition to a superconducting or superfluid phase.’
      • ‘Similarly, it is very unlikely for singlet superconductivity to appear in the ferromagnetic state because the exchange interaction forbids the formation of Cooper pairs.’
      • ‘Approximately two years ago, the scientists found a deep and unexpected connection between Bose-Einstein condensates and the bonding of Cooper pairs.’
      • ‘One potential source of such particles is the stream of conjoined electrons that exist in superconductors, but no one has been able to drive a wedge between these so-called Cooper pairs.’


1960s: named after Leon N. Cooper (born 1930), American physicist.


Cooper pair