Continuous evolution of the 2D Hubbard model from an insulator to a metal

R. Preuss; R. Putz; W. Hanke; W. Von Der Linden

doi:10.1016/0022-3697(95)00101-8

Continuous evolution of the 2D Hubbard model from an insulator to a metal

R. Preuss, R. Putz, W. Hanke, W. Von Der Linden

Institute of Theoretical and Computational Physics (5150)

Research output: Contribution to journal › Article › peer-review

Abstract

We present Quantum-Monte-Carlo results for the momentum and frequency dependent spectral weight A(k, ω) showing the evolution from insulating to metallic behavior in the two-dimensional Hubbard model. As observed in recent photoemission experiments for cuprates, in both undoped and doped cases the electronic excitations display two rather similar general features, i.e. a quasiparticle (QP)-like dispersive band of small width of the order of the exchange interaction J and a broad valence- and conduction-band background. Arguments for one and the same many-body physics namely the continuous reduction of the spin-spin correlation length and related changes in the QP-spin correlations behind the continuous evolution to the metallic QP dispersion are given.

Original language	English
Pages (from-to)	1659-1661
Number of pages	3
Journal	The Journal of Physics and Chemistry of Solids
Volume	56
Issue number	12
DOIs	https://doi.org/10.1016/0022-3697(95)00101-8
Publication status	Published - 1 Dec 1995

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10.1016/0022-3697(95)00101-8

https://www.sciencedirect.com/science/article/pii/0022369795001018

Cite this

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title = "Continuous evolution of the 2D Hubbard model from an insulator to a metal",

abstract = "We present Quantum-Monte-Carlo results for the momentum and frequency dependent spectral weight A(k, ω) showing the evolution from insulating to metallic behavior in the two-dimensional Hubbard model. As observed in recent photoemission experiments for cuprates, in both undoped and doped cases the electronic excitations display two rather similar general features, i.e. a quasiparticle (QP)-like dispersive band of small width of the order of the exchange interaction J and a broad valence- and conduction-band background. Arguments for one and the same many-body physics namely the continuous reduction of the spin-spin correlation length and related changes in the QP-spin correlations behind the continuous evolution to the metallic QP dispersion are given.",

author = "R. Preuss and R. Putz and W. Hanke and {Von Der Linden}, W.",

year = "1995",

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doi = "10.1016/0022-3697(95)00101-8",

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T1 - Continuous evolution of the 2D Hubbard model from an insulator to a metal

AU - Preuss, R.

AU - Putz, R.

AU - Hanke, W.

AU - Von Der Linden, W.

PY - 1995/12/1

Y1 - 1995/12/1

N2 - We present Quantum-Monte-Carlo results for the momentum and frequency dependent spectral weight A(k, ω) showing the evolution from insulating to metallic behavior in the two-dimensional Hubbard model. As observed in recent photoemission experiments for cuprates, in both undoped and doped cases the electronic excitations display two rather similar general features, i.e. a quasiparticle (QP)-like dispersive band of small width of the order of the exchange interaction J and a broad valence- and conduction-band background. Arguments for one and the same many-body physics namely the continuous reduction of the spin-spin correlation length and related changes in the QP-spin correlations behind the continuous evolution to the metallic QP dispersion are given.

AB - We present Quantum-Monte-Carlo results for the momentum and frequency dependent spectral weight A(k, ω) showing the evolution from insulating to metallic behavior in the two-dimensional Hubbard model. As observed in recent photoemission experiments for cuprates, in both undoped and doped cases the electronic excitations display two rather similar general features, i.e. a quasiparticle (QP)-like dispersive band of small width of the order of the exchange interaction J and a broad valence- and conduction-band background. Arguments for one and the same many-body physics namely the continuous reduction of the spin-spin correlation length and related changes in the QP-spin correlations behind the continuous evolution to the metallic QP dispersion are given.

U2 - 10.1016/0022-3697(95)00101-8

DO - 10.1016/0022-3697(95)00101-8

M3 - Article

SN - 0022-3697

VL - 56

SP - 1659

EP - 1661

JO - The Journal of Physics and Chemistry of Solids

JF - The Journal of Physics and Chemistry of Solids

IS - 12

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