@inproceedings{83bc7b90477a48e79fa9271e2aa63493,
title = "Phase coherence and pairing amplitude in photo-excited superconductors",
abstract = "New data on Bi2Sr2CaCu2O8+δ (Bi2212) reveal interesting aspects of photoexcited superconductors. The electrons dynamics show that inelastic scattering by nodal quasiparticles decreases when the temperature is lowered below the critical value of the superconducting phase transition. This drop of electronic dissipation is astonishingly robust and survives to photoexcitation densities much larger than the value sustained by long-range superconductivity. The unconventional behavior of quasiparticle scattering is ascribed to superconducting correlations extending on a length scale comparable to the inelastic mean-free path. Our measurements indicate that strongly driven superconductors enter in a regime without phase coherence but finite pairing amplitude.",
keywords = "correlated materials, high temperature superconductors, time resolved photoemission",
author = "Luca Perfetti and Christian Piovera and Zailan Zhang",
note = "Publisher Copyright: {\textcopyright} 2016 SPIE.; Ultrafast Bandgap Photonics ; Conference date: 18-04-2016 Through 20-04-2016",
year = "2016",
month = jan,
day = "1",
doi = "10.1117/12.2222498",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Eric Mazur and Rafailov, \{Michael K.\}",
booktitle = "Ultrafast Bandgap Photonics",
}