Definition of BCS in English:

BCS

noun

Physics
  • Attributive designating a theory of superconductivity which attributes the phenomenon to the collective behaviour of weakly bound pairs of electrons (Cooper pairs), which are not scattered by defects, phonons, etc., and hence experience zero resistance; relating to or conforming to this theory.

Origin

1950s; earliest use found in Physica. From the initial letters of the names of John Bardeen, Leon N. Cooper (b. 1930), and John Robert Schrieffer (b. 1931), U.S. physicists, who described the theory in 1957 ( Physical Rev 108 1175).