1996/09/30 by M. Ulmke, Richard T. Scalettar, R. T. Scalettar +4 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat
paper · pdf · doi:10.1103/physrevb.54.16523
published as Phys. Rev. B 54, 16523 (1996) · 11 pages, REVTeX, 16 figures included using psfig.sty. Ref.30 corrected
arxiv created 1996/09/30 · openalex publication_date 1996/12/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Dynamic properties of the three-dimensional single-band Hubbard model are studied using quantum Monte Carlo combined with the maximum entropy technique. At half-filling, there is a clear gap in the density of states and well-defined quasiparticle peaks at the top (bottom) of the lower (upper) Hubbard band. We find an antiferromagnetically induced weight above the naive Fermi momentum. Upon hole doping, the chemical potential \ensuremathμ moves to the top of the lower band where a robust peak is observed. Results are compared with spin-density-wave mean-field and self-consistent Born approximation results, and also with the infinite-dimensional (D=\ensuremath∞) Hubbard model, and experimental photoemission for three-dimensional transition-metal oxides. \textcopyright 1996 The American Physical Society.