1994/02/11 by Elbio Dagotto, Dagotto, Elbio, Alexander Nazarenko +3
Earth and Planetary Sciences · Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #High-pressure geophysics and materials #Physics of Superconductivity and Magnetism #Superconductivity in MgB2 and Alloys #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9402051
13 pages + 4 figures (figures are available on request), REVTEX
arxiv created 1994/02/11 · openalex publication_date 1994/02/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A model of weakly interacting hole quasiparticles is proposed to describe the\nnormal state of the high temperature superconductors. The effect of strong\ncorrelations is contained in the dispersion relation of the holes, which is\nobtained accurately using a numerical technique and the t-J model on 12\×\n12 clusters. Saddle-points generated by many-body effects induce quasiparticle\nflat bands similar to those observed in recent angle-resolved photoemission\nexperiments. The near degeneracy between momentum states along the rm X-Y\ndirection is a hidden small energy scale in the problem, which produces a\nstrongly temperature dependent Hall coefficient, as well as a large Fermi\nsurface similar to those observed in the cuprates.\n