Laser ARPES, the sudden approximation, and quasiparticle-like peaks in Bi2Sr2CaCu2O8+delta

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dc.creatorKoralek, J. D.
dc.creatorDouglas, J. F.
dc.creatorPlumb, N. C.
dc.creatorSun, Z.
dc.creatorFedorov, A.
dc.creatorMurnane, M.
dc.creatorKapteyn, H.
dc.creatorCundiff, S.
dc.creatorAiura, Y.
dc.creatorOka, K.
dc.creatorEisaki, H.
dc.creatorDessau, D. S.
dc.date2005-08-17
dc.date.accessioned2026-07-07T06:26:44Z
dc.date.available2026-07-07T06:26:44Z
dc.descriptionA new low photon energy regime of angle resolved photoemission spectroscopy is accessed with lasers and used to study the superconductor Bi2Sr2CaCu2O8+delta. The low energy increases bulk sensitivity, reduces background, and improves resolution. With this we observe spectral peaks which are sharp on the scale of their binding energy - the clearest evidence yet for quasiparticles in the normal state. Crucial aspects of the data such as the dispersion, superconducting gaps, and the bosonic coupling kink and associated weight transfer are robust to a possible breakdown of the sudden approximation.
dc.description15 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0508404
dc.identifierhttp://arxiv.org/abs/cond-mat/0508404
dc.identifierPhys Rev Lett 96, 017005 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.017005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/97196
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleLaser ARPES, the sudden approximation, and quasiparticle-like peaks in Bi2Sr2CaCu2O8+delta
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