Quasiparticle Dispersion of the 2D Hubbard Model: From an Insulator to a Metal

R. Preuss, Werner Hanke, W. von der Linden

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Abstract

On the basis of quantum Monte Carlo results the evolution of the spectral weight A(k,ω) 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.
Original languageEnglish
Pages (from-to)1344-1347
Number of pages4
JournalPhysical Review Letters
Volume75
Issue number7
DOIs
Publication statusPublished - 1 Aug 1995

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insulators
two dimensional models
metals
cuprates
narrowband
conduction bands
photoelectric emission
valence
electronics
excitation
interactions

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Quasiparticle Dispersion of the 2D Hubbard Model: From an Insulator to a Metal. / Preuss, R.; Hanke, Werner; von der Linden, W.

In: Physical Review Letters, Vol. 75, No. 7, 01.08.1995, p. 1344-1347.

Research output: Contribution to journalArticleResearchpeer-review

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