Jan Paniev said:I have started to learn BCS theory and I am not been able to find a derivation of the effective attractive electron-electron interaction which is assumed to explain the Cooper pairing. Can anyone point me to a reference where I can find this derivation?
Jan.
The origin of attractive electron interaction is the electromagnetic force, which is one of the fundamental forces of nature. This force is responsible for the attraction between negatively charged electrons and positively charged protons in an atom.
The attractive electron interaction works through the exchange of virtual particles called photons. When two electrons are close to each other, they exchange photons, creating a force that pulls them towards each other.
The strength of attractive electron interaction is affected by the distance between two electrons, the charge of the particles, and the dielectric constant of the medium they are in. The closer the electrons are, the stronger the interaction will be.
No, attractive electron interaction is not the only force that holds atoms together. The strong nuclear force is responsible for holding the nucleus of an atom together, while the attractive electron interaction is responsible for holding the electrons in their orbit around the nucleus.
Yes, attractive electron interaction can be repulsive under certain circumstances. This can happen when two electrons have the same spin and are in close proximity to each other, causing a repulsive force between them.