Isotopic shift in angle-resolved photoemission spectra of Bi2Sr2CaCu2O8 due to quadratic electron-phonon coupling

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dc.creatorJi, Kai
dc.creatorNasu, Keiichiro
dc.date2007-09-28
dc.date.accessioned2026-07-07T09:44:54Z
dc.date.available2026-07-07T09:44:54Z
dc.descriptionIn connection with the experiment on oxygen isotope effect of Bi2Sr2CaCu2O8 with the angle-resolved photoemission spectroscopy (ARPES), we theoretically study the isotope-induced band shift in ARPES by the Hartree-Fork and quantum Monte Carlo methods. We find that this band shift can be clarified based on a quadratically coupled electron-phonon (e-ph) model. The large ratio of band shift versus phonon energy change is connected with the softening effect of phonon, and the positive-negative sign change is due to the momentum dependence of the e-ph coupling.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0709.4530
dc.identifierhttp://arxiv.org/abs/0709.4530
dc.identifierPhys. Lett. A 372, 524 (2008)
dc.identifierdoi:10.1016/j.physleta.2007.07.048
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/163036
dc.subjectStrongly Correlated Electrons
dc.titleIsotopic shift in angle-resolved photoemission spectra of Bi2Sr2CaCu2O8 due to quadratic electron-phonon coupling
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