Abstract
A zero-parameter model for a superconductor is constructed, where the pairing force arises from the virtual excitation of hole pairs to the upper Hubbard level in oxide superconductors. This virtual excitation is assumed to be due to the Coulomb interaction between the two holes. The essential ingredient is the modification of the basic two-body interaction in the presence of a high lying resonant level. The predictions of the model agree very well with experiment in the recently discovered high temperature copper oxide superconductors. A possible explanation for the small isotope effect in YBa2Cu3O7 superconductor is also discussed.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Paper version not known
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
