Nonadiabatic Superconductivity and Vertex Corrections in Uncorrelated Systems

Details Nonadiabatic Superconductivity and Vertex Corrections in Uncorrelated Systems Nonadiabatic Superconductivity and Vertex Corrections in Uncorrelated Systems

2001-10-30

arxiv.org/abs/cond-mat/0110631v1

Phys. Rev. B 65, 012512 (2002)

Physics

Condensed Matter

Superconductivity

4 pages, 3 eps figs

Scientific paper

10.1103/PhysRevB.65.012512

We investigate the issue of the nonadiabatic superconductivity in uncorrelated systems. A local approximation is employed coherently with the weak dependence on the involved momenta. Our results show that nonadiabatic vertex corrections are never negligible, but lead to a strong suppression of $T_c$ with respect to the conventional theory. This feature is understood in terms of the momentum-frequency dependence of the vertex function. In contrast to strongly correlated systems, where the small ${\bf q}$-selection probes the positive part of vertex function, vertex corrections in uncorrelated systems are essentially negative resulting in an effective reduction of the superconducting pairing. Our analysis shows that vertex corrections in nonadiabatic regime can be never disregarded independently of the degree of electronic correlation in the system.

Affiliated with

Also associated with

No associations

Rating

Nonadiabatic Superconductivity and Vertex Corrections in Uncorrelated Systems 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 Nonadiabatic Superconductivity and Vertex Corrections in Uncorrelated Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonadiabatic Superconductivity and Vertex Corrections in Uncorrelated Systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-13250