1994/12/20 by R. Preuss, W. von der Linden, Wolfgang von der Linden +1 · 196 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Condensed matter physics #Cuprate #Doping #Electronic structure #Hubbard model #Magnetic and transport properties of perovskites and related materials #Monte Carlo method #Mott insulator #Physics #Physics of Superconductivity and Magnetism #Quantum Monte Carlo #Quasiparticle #Superconductivity #cond-mat
paper · pdf · doi:10.1103/physrevlett.75.1344
published in Physical Review Letters 75(7), 1344-1347 (American Physical Society) · 11 pages, REVtex, 4 figures (in uuencoded postscript format)
arxiv created 1994/12/20 · openalex publication_date 1995/08/14 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
On the basis of quantum Monte Carlo results the evolution of the spectral weight A(k,\ensuremathω) of the two-dimensional Hubbard model is studied from insulating to metallic behavior. As observed in recent photoemission experiments for cuprates, the electronic excitations display essentially doping-independent features; a quasiparticlelike dispersive narrow band of width of the order of the exchange interaction J and a broad valence- and conduction-band background. The continuous evolution is traced back to one and the same many-body origin: the doping-dependent antiferromagnetic spin-spin correlation.