Sr$_{2}$VO$_{3}$FeAs as Compared to Other Fe-based Superconductors

Details Sr$_{2}$VO$_{3}$FeAs as Compared to Other Fe-based Superconductors Sr$_{2}$VO$_{3}$FeAs as Compared to Other Fe-based Superconductors

2009-09-28

arxiv.org/abs/0909.5174v4

Phys. Rev. B 81, 020507(R) (2010)

Physics

Condensed Matter

Superconductivity

Journal reference added

Scientific paper

One of the most popular scenarios for the superconductivity in Fe-based superconductors (FeBSC) posits that the bosons responsible for electronic pairing are spin-fluctuations with a wave vector spanning the hole Fermi surfaces (FSs) near $\Gamma$ and the electron FSs near M points. So far all FeBSC for which neutron data are available do demonstrate such excitations, and the band structure calculations so far were finding quasi-nested FSs in all FeBSC, providing for a peak in the spin susceptibility at the desired wave vectors. However, the newest addition to the family, Sr$_{2}$VO$_{3}$FeAs, has been calculated to have a very complex FS with no visible quasi-nesting features. It was argued therefore that this material does not fall under the existing paradigm and calls for revisiting our current ideas about what is the likely cause of superconductivity in FeBSC. In this paper, I show that the visible complexity of the FS is entirely due to the V-derived electronic states. Assuming that superconductivity in Sr$_{2}$VO$_{3}$FeAs, as in the other FeBSC, originates in the FeAs layers, and the superconducting electrons are sensitive to the susceptibility of the FeAs electronic subsystem, I recalculate the bare susceptibility, weighting the electronic states with their Fe character, and obtain a susceptibility that fully supports the existing quasi-nesting model.

Affiliated with

Also associated with

No associations

Rating

Sr$_{2}$VO$_{3}$FeAs as Compared to Other Fe-based 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 Sr$_{2}$VO$_{3}$FeAs as Compared to Other Fe-based Superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sr$_{2}$VO$_{3}$FeAs as Compared to Other Fe-based Superconductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-235845