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arXiv · cond-mat/0701724

Excitons in QED3 and spin response in a phase-fluctuating d-wave superconductor

Babak H. Seradjeh·Igor F. Herbut
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Abstract

We study the particle-hole exciton mode in the QED3 theory of a phase-fluctuating d-wave superconductor in ladder approximation. We derive a Schroedinger-like equation for the exciton bound state and determine the conditions for its existence. We find the dispersion of this mode below the particle-hole continuum and compare our results with the resonance observed in neutron scattering measurements in cuprates.

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Babak H. Seradjeh, Igor F. Herbut. 2007-07-10. Excitons in QED3 and spin response in a phase-fluctuating d-wave superconductor. https://doi.org/10.1103/physrevb.76.024503

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