Cooper pair

 
Pronunciation: /ˈkuːpəpɛː/

noun

Physics
  • a 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.
  • a loosely bound pair of atoms in a superfluid.

Origin:

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