We analyze the scattering rate for 2D fermions interacting via soft nematic fluctuations. The ground state is an s-wave superconductor, but other pairing channels are almost equally attractive. This strongly alters the scattering rate: At energies beyond the pairing gap Δ, it is renormalized by contributions from all pairing channels. At energies of order Δ, it is determined by the competition between scattering into a gapped continuum and dispersing nematic resonance. The outcome is a “peak-peak-dip-hump” spectrum, similar, but not identical, to the “peak-dip-hump” structure in the cuprates.
Bibliographical noteFunding Information:
The work by A. V. C. was supported by the Office of Basic Energy Sciences, U.S. Department of Energy, under Award No. DE-SC0014402. A. K. was supported by NSF Grant No. DMR-2037654.
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