Collectived-wave exciton modes in the calculated Raman spectrum of Fe-based superconductors

2009/04/13 by D. J. Scalapino, Thomas Devereaux, T. P. Devereaux · 4 citations
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.mtrl-sci #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.80.140512

published as Phys. Rev. B 80, 140512(R) (2009) · 4 figures

arxiv created 2009/04/13 · openalex publication_date 2009/10/26 · arxiv updated 2010/11/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Calculations of the pairing interaction in multiband 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 ground state, we investigate the d-wave collective excitonic mode and its coupling to the Raman scattering.

Citations

• Bardeen-Cooper-Schrieffer Theory of Superconductivity in the Case of Overlapping Bands

Cited by

• Balancing Act: Evidence for a Strong Subdominantd-Wave Pairing Channel inBa0.6K0.4Fe2As2
• Fluctuations and pairing in Fe-based superconductors: light scattering experiments
• Raman Study of Cooper Pairing Instabilities in (Li1−xFex)OHFeSe
• Collective modes in multiband superfluids and superconductors: Multiple dynamical classes
• A modified-residue prescription to calculate dynamical correlation functions

Related

• Theory of Raman scattering from Leggett’s collective mode in a multiband superconductor: Application toMgB2
• Collective modes in singlet superconductors
• Two-band model of Raman scattering on iron pnictide superconductors
• Chiral Symmetry and Collective Excitations in p-wave, d-wave and f-wave Superconductors
• Observation of Leggett’s Collective Mode in a MultibandMgB2Superconductor