One of the mysteries of the English language finally explained.
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 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.
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