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arXiv · 2602.02097

Two-lifetime model for the cuprates revisited

František Herman·Lucia Gelenekyová·Hana Havranová·Richard Hlubina
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Abstract

Several models of the strange-metal state of the cuprate superconductors postulate the existence of strong inelastic forward scattering of the electrons, but direct evidence of such scattering is missing. Here we show that angle-resolved photoemission spectroscopy (ARPES) provides a unique tool which can address this issue. We propose a two-lifetime phenomenological model of the superconducting state of the cuprates and we show that it explains several salient low-energy features of the measured ARPES spectra. The model enables discrimination between forward- and large-angle scattering and, in addition, gives access to the magnitude of the gap function away from the Fermi surface.

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František Herman, Lucia Gelenekyová, Hana Havranová, Richard Hlubina. 2026-02-02. Two-lifetime model for the cuprates revisited. https://arxiv.org/abs/2602.02097

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