@article{5b6a0209a5084463acbd3f9f754ef3c9,
title = "Superconductivity-induced self-energy evolution of the nodal electron of optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ",
abstract = "The temperature dependent evolution of the renormalization effect in optimally doped Bi2 Sr2 Ca0.92 Y0.08 Cu2 O8+δ along the nodal direction has been studied via angle-resolved photoemission spectroscopy. Fine structure is observed in the real part of the self-energy (Re Σ), including a subkink and maximum, suggesting that electrons couple to a spectrum of bosonic modes, instead of just one mode. Upon cooling through the superconducting phase transition, the fine structures of the extracted Re Σ exhibit a two-processes evolution demonstrating an interplay between kink renormalization and superconductivity. We show that this two-process evolution can be qualitatively explained by a simple Holstein model in which a spectrum of bosonic modes is considered.",
author = "Lee, {W. S.} and W. Meevasana and S. Johnston and Lu, {D. H.} and Vishik, {I. M.} and Moore, {R. G.} and H. Eisaki and N. Kaneko and Devereaux, {T. P.} and Shen, {Z. X.}",
year = "2008",
month = apr,
day = "11",
doi = "10.1103/PhysRevB.77.140504",
language = "English",
volume = "77",
journal = "Physical Review B - Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "American Physical Society",
number = "14",
}