According to the BCS theory,
A)electrons in a superconductor are coupled in pairs at low temperatures.
B)electrons in a Cooper pair have equal and opposite spins.
C)electrons in a Cooper pair act as a single particle with zero spin.
D)any number of Cooper pairs may be in the same quantum state with the same energy.
E)All of these are true.

Question

Quizplus · Accepted Answer

The BCS (Bardeen-Cooper-Schrieffer) theory explains superconductivity by proposing that electrons form pairs (known as Cooper pairs) at low temperatures. These pairs have equal and opposite spins, allowing them to act as a single particle with zero net spin. Moreover, according to the principles of Bose-Einstein condensation, any number of these Cooper pairs can occupy the same quantum state, having the same energy. This collective behavior contributes to the phenomenon of superconductivity, where electrical resistance drops to zero. Therefore, all the statements A, B, C, and D accurately describe aspects of the BCS theory.

According to the BCS Theory