Superconductivity in a spin liquid - a one dimensional example

Details Superconductivity in a spin liquid - a one dimensional example Superconductivity in a spin liquid - a one dimensional example

1995-09-12

arxiv.org/abs/cond-mat/9509066v1

Physics

Condensed Matter

11 pages, Latex, no figures

Scientific paper

10.1103/PhysRevB.53.14036

We study a one-dimensional model of interacting conduction electrons with a two-fold degenerate band away from half filling. The interaction includes an on-site Coulomb repulsion and Hund's rule coupling. We show that such one-dimensional system has a divergent Cooper pair susceptibility at T = 0, provided the Coulomb interaction $U$ between electrons on the same orbital and the modulus of the Hund's exchange integral $|J|$ are larger than the interorbital Coulomb interaction. It is remarkable that the superconductivity can be achieved for {\it any} sign of $J$. The opening of spectral gaps makes this state stable with respect to direct electron hopping between the orbitals. The scaling dimension of the superconducting order parameter is found to be between 1/4 (small $U$) and 1/2 (large $U$).

Affiliated with

Also associated with

No associations

Rating

Superconductivity in a spin liquid - a one dimensional example 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 Superconductivity in a spin liquid - a one dimensional example, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superconductivity in a spin liquid - a one dimensional example will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-519843