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Direct observation of self-energy signatures of the resonant collective mode in Bi2Sr2CaCu2O8+delta

TitleDirect observation of self-energy signatures of the resonant collective mode in Bi2Sr2CaCu2O8+delta
Publication TypeJournal Article
Year of Publication2017
AuthorsMou, DX, Kaminski, A, Gu, GD
JournalPhysical Review B
Volume95
Pagination174501
Date Published05
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000400659400004
Keywordsangle-resolved photoemission, dispersion, electronic-spectra, line-shape, magnetic excitations, neutron-scattering, physics, pseudogap, state, t-c superconductors, transition-temperature
Abstract

rongest. This interaction leads to a pronounced peak in the scattering rate and we demonstrate that this feature is directly responsible for the well-known peak-dip-hump structure in cuprates. By studying how the weight of this peak changes with temperature we unequivocally demonstrate that interaction of electrons with the resonant mode in cuprates vanishes at T-c and is very much localized in the momentum space close to the antinode. These findings present a consistent picture of line shape and self-energy signatures of the electron-boson coupling in cuprates and resolve long-standing controversy surrounding this issue. The momentum dependence of the strength of electron-mode interaction enables development of quantitative theory of this phenomenon in cuprates.

DOI10.1103/PhysRevB.95.174501
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Complex States

Alternate JournalPhys. Rev. B