Anisotropic suppression of quasiparticle weight in two-dimensional electron system with partially flat Fermi surface: two-loop renormalization-group analysis

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dc.creatorKishine, Jun-ichiro
dc.creatorYonemitsu, Kenji
dc.date1998-08-27
dc.date.accessioned2026-07-07T03:11:24Z
dc.date.available2026-07-07T03:11:24Z
dc.descriptionTwo-loop renormalization-group analysis for a two-dimensional electron system with a partially flat Fermi surface has been carried out. We found that, {\it irrespective of pairing mechanism}, the quasiparticle weight is anisotropically suppressed due to logarithmically singular processes in the flat regions of the Fermi surface. When the energy scale decreases, the quasiparticle weight is the most strongly suppressed around the center of the flat region, which qualitatively agrees with the anisotropic pseudogap behavior suggested through the angle-resolved photoemission spectroscopy experiments for underdoped Bi$_2$Sr$_2$CaCu$_2$O$_8$.
dc.description10 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9808303
dc.identifierhttp://arxiv.org/abs/cond-mat/9808303
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28564
dc.subjectStrongly Correlated Electrons
dc.titleAnisotropic suppression of quasiparticle weight in two-dimensional electron system with partially flat Fermi surface: two-loop renormalization-group analysis
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