Ubiquitous suppression of the nodal coherent spectral weight in Bi-based cuprates

Abstract

High-temperature superconducting cuprates exhibit an intriguing phenomenology for the low-energy elementary excitations. In particular, an unconventional temperature dependence of the coherent spectral weight (CSW) has been observed in the superconducting phase by angle-resolved photoemission spectroscopy (ARPES), both at the antinode where the d-wave paring gap is maximum, as well as along the gapless nodal direction. Here, we combine equilibrium and time-resolved ARPES to track the temperature dependent meltdown of the nodal CSW in Bi-based cuprates with unprecedented sensitivity. We find the nodal suppression of CSW upon increasing temperature to be ubiquitous across single- and double-layer Bi cuprates, and uncorrelated to superconducting and pseudogap onset temperatures. We quantitatively model both the lineshape of the nodal spectral features and the anomalous suppression of CSW within the Fermi-Liquid framework, establishing the key role played by the normal state electrodynamics in the description of nodal quasiparticles in superconducting cuprates.

6 pages, 3 figures; Supplementary Materials available upon request

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Cited by in corpus (4)

• Time- and Angle-Resolved Photoemission Studies of Quantum Materials
• Time-resolved ARPES on cuprates: Tracking the low-energy electrodynamics in the time domain
• The fate of quasiparticles at high-temperature
• Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography