Effects of Fermi-surface shrinking on the optical sum rule in pnictides

Details Effects of Fermi-surface shrinking on the optical sum rule in pnictides Effects of Fermi-surface shrinking on the optical sum rule in pnictides

2010-11-24

arxiv.org/abs/1011.5397v2

Phys. Rev. B 83, 104516 (2011)

Physics

Condensed Matter

Superconductivity

11 pages, 10 figures; final version, accepted for publication

Scientific paper

10.1103/PhysRevB.83.104516

In this paper we investigate the effects of the band shifts induced by the interband spin-fluctuation coupling on the optical sum rule in pnictides. We show that, despite the shrinking of the Fermi surfaces with respect to first-principle calculations, the charge-carrier concentration in each band is almost unchanged, with a substantial conservation of the total optical sum rule. However, a significant transfer of spectral weight occurs from low-energy coherent processes to incoherent ones, with practical consequences on the experimental estimate of the sum rule, that is carried out integrating the data up to a finite cut-off. This has profound consequences both on the absolute value of the sum rule and on its temperature dependence, that must be taken into account while discussing optical experiments in these systems.

Affiliated with

Also associated with

No associations

Rating

Effects of Fermi-surface shrinking on the optical sum rule in pnictides 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 Effects of Fermi-surface shrinking on the optical sum rule in pnictides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of Fermi-surface shrinking on the optical sum rule in pnictides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-241275