Screening effects in superconductors

Details Screening effects in superconductors Screening effects in superconductors

1996-08-26

arxiv.org/abs/cond-mat/9608119v1

Physics

Condensed Matter

4 pages, revtex, no figures, submitted to Physica B (Proceedings of SCES '96 International Conference, held in Zurich from 19t

Scientific paper

10.1016/S0921-4526(96)00712-0

The partition function of the Hubbard model with local attraction and long range Coulomb repulsion between electrons is written as a functional integral with an action $A$ involving a pairing field $\Delta$ and a local potential $V$. After integration over $V$ and over fluctuations in $|\Delta|^{2}$, the final form of $A$ involves a Josephson coupling between the local phases of $\Delta$ and a "kinetic energy" term, representing the screened Coulomb interaction between charge fluctuations. The competition between Josephson coupling and charging energy allows to understand the relation between $T_{C}$ and composition in high-$T_{C}$ materials, in particular superlattices, alloys and bulk systems of low doping.

Affiliated with

Also associated with

No associations

Rating

Screening effects in superconductors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Screening effects in superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screening effects in superconductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-361524