Collective $d-$wave Excitonic Modes in the Fe-Superconductors

Details Collective $d-$wave Excitonic Modes in the Fe-Superconductors Collective $d-$wave Excitonic Modes in the Fe-Superconductors

2009-04-13

arxiv.org/abs/0904.1973v1

Phys. Rev. B 80, 140512(R) (2009)

Physics

Condensed Matter

Superconductivity

4 figures

Scientific paper

10.1103/PhysRevB.80.140512

Calculations of the pairing interaction in multi-band models of the Fe superconductors show that it is attractive in both the $A_{1g}$ (s-wave) and $B_{1g}$ (d-wave) channels. This raises the possibility that these materials may have collective excitonic modes. Here, assuming an s-wave groundstate, we investigate the d-wave collective excitonic mode and its coupling to the Raman scattering.

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