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

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