A Study of the Effects of Disorder in the 2D Hubbard Model

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We study the effects of disorder on long range antiferromagnetic correlations and the Mott gap in the half-filled, two dimensional, repulsive Hubbard model. We employ Hartree-Fock (HF) and Quantum Monte Carlo (QMC) techniques in our study of the bond and site disordered models. Results from mean field (HF) calculations are used to develop a qualitative picture of the physics and to guide our choice for input to the QMC methods. The basic properties of two QMC methods for correlated fermions are discussed, and the results from these different approaches are presented.

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446 Kilobytes pages

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Enjalran, M.; Hebert, F.; Scalettar, R.; Zhang, S. & Batrouni, G. June 5, 2000.

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Description

We study the effects of disorder on long range antiferromagnetic correlations and the Mott gap in the half-filled, two dimensional, repulsive Hubbard model. We employ Hartree-Fock (HF) and Quantum Monte Carlo (QMC) techniques in our study of the bond and site disordered models. Results from mean field (HF) calculations are used to develop a qualitative picture of the physics and to guide our choice for input to the QMC methods. The basic properties of two QMC methods for correlated fermions are discussed, and the results from these different approaches are presented.

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446 Kilobytes pages

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  • UC Davis Colloquium, Davis, CA (US), 06/05/2000

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  • Report No.: UCRL-JC-139246
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 793619
  • Archival Resource Key: ark:/67531/metadc736214

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Office of Scientific & Technical Information Technical Reports

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  • June 5, 2000

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  • Oct. 19, 2015, 7:39 p.m.

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  • May 6, 2016, 4:06 p.m.

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Enjalran, M.; Hebert, F.; Scalettar, R.; Zhang, S. & Batrouni, G. A Study of the Effects of Disorder in the 2D Hubbard Model, article, June 5, 2000; California. (digital.library.unt.edu/ark:/67531/metadc736214/: accessed November 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.