Coherence effect in a two-band superconductor: Application to iron pnictides

Details Coherence effect in a two-band superconductor: Application to iron pnictides Coherence effect in a two-band superconductor: Application to iron pnictides

2009-11-03

arxiv.org/abs/0911.0528v2

J. Phys. Soc. Jpn. 79, 074710 (2010)

Physics

Condensed Matter

Superconductivity

15 pages, 7 figures, 1 table

Scientific paper

10.1143/JPSJ.79.074710

From a theoretical point of view, we propose an experimental method to determine the pairing symmetry of iron pnictides. We focus on two kinds of pairing symmetries, $s_{+-}$ and $s_{++}$, which are strong candidates for the pairing symmetry of iron pnictides. For each of these two symmetries, we calculate both the density and spin response functions by using the two-band BCS model within the one-loop approximation. As a result, a clear difference is found between the $s_{+-}$- and $s_{++}$-wave states in the temperature dependence of the response functions at nesting vector $\bf{Q}$, which connects the hole and electron Fermi surfaces. We point out that this difference comes from the coherence effect in the two-band superconductor. We suggest that the pairing symmetry could be clarified by observing the temperature dependence of both the density and spin structure factors at the nesting vector $\bf{Q}$ in neutron scattering measurements.

Affiliated with

Also associated with

No associations

Rating

Coherence effect in a two-band superconductor: Application to iron 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 Coherence effect in a two-band superconductor: Application to iron pnictides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherence effect in a two-band superconductor: Application to iron pnictides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-256361