2006/02/28 by Kaiyu Yang, Kai-Yu Yang, T. M. Rice +2 · 13 citations
Physics and Astronomy · #Computer science #Condensed matter physics #Magnetic properties of thin films #Phenomenological model #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum and electron transport phenomena #State (computer science) #Statistical physics #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.73.174501
published as Phys. Rev. B 73, 174501 (2006) · 11 pages, 14 figures
openalex publication_date 2006/05/03 · arxiv created 2006/09/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
An ansatz is proposed for the coherent part of the single particle Green's function in a doped resonant valence bond (RVB) state by analogy with the form derived by Konik and co-workers for a doped spin liquid formed by an array of two-leg Hubbard ladders near half-filling. The parameters of the RVB state are taken from the renormalized mean field theory of Zhang and co-workers for underdoped cuprates. The ansatz shows good agreement with recent angle resolved photoemission on underdoped cuprates and resolves an apparent disagreement with the Luttinger sum rule. The transition in the normal state from a doped RVB spin liquid to a standard Landau Fermi liquid, that occurs in the renormalized mean field theory, appears as a quantum critical point characterized by a change in the analytic form of the Green's function. A d-wave superconducting dome surrounding this quantum critical point is introduced phenomenologically. Results are also presented for the Drude weight and tunneling density of states as functions of the hole density.