 Energy scales and quasiparticle properties in an extended Hubbard model for HTCR. Citro () and M. Marinaro The European Physical Journal B: Condensed Matter and Complex Systems, 2004, vol. 37, issue 1, 15-18 Abstract: By means of a strong-coupling approach, developed in previous works, we study the quasiparticle properties in an extended Hubbard model in presence of critical charge fluctuations near a stripe-quantum critical-point. We show that the quasiparticle dispersion has a kink along the diagonal Brillouin zone at the energy of the order 50 meV, for realistic values of the parameters. The energy and momentum distribution curves (EDC, MDC) along the diagonal are also analyzed. The results for the EDC derived quasiparticle width reveals an anomalous drop in the low-energy scattering rate at the same energy of the kink. This drop corresponds to a new energy scale in the system that reflects the interaction between the quasiparticles and the critical charge fluctuations. The results offer a possible interpretation of the ARPES and photoemission experiments on Bi2212. Copyright EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2004 Date: 2004 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:37:y:2004:i:1:p:15-18:10.1140/epjb/e2004-00025-1 Ordering information: This journal article can be ordered from DOI: 10.1140/epjb/e2004-00025-1 Access Statistics for this article The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences |
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