Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo

Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo

We study the emergence of edge-magnetism in zigzag nanoribbons from electron-electron interactions in a minimal 3-band tight-binding descrip¬tion of transition-metal dichalcogenide monolayers with an intra-orbital Hub¬bard term. We explain the influence of each orbital in the magnetic ordering, comp...

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Main Authors: Brito Francisco, Castro Eduardo V., Lopes João M.V.P.
Format: Article
Language:English
Published: EDP Sciences 2020-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2020/09/epjconf_cmpnc2019_03003.pdf
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spelling doaj-e8fc999acf9e402da0cf17e431adb5722021-08-02T12:13:55ZengEDP SciencesEPJ Web of Conferences2100-014X2020-01-012330300310.1051/epjconf/202023303003epjconf_cmpnc2019_03003Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte CarloBrito Francisco0Castro Eduardo V.1Lopes João M.V.P.2Centro de Física das Universidades do Minho e Porto, Departamento de Física e Astronomia, Facul-dade de Ciências, Universidade do PortoCentro de Física das Universidades do Minho e Porto, Departamento de Física e Astronomia, Facul-dade de Ciências, Universidade do PortoCentro de Física das Universidades do Minho e Porto, Departamento de Física e Astronomia, Facul-dade de Ciências, Universidade do PortoWe study the emergence of edge-magnetism in zigzag nanoribbons from electron-electron interactions in a minimal 3-band tight-binding descrip¬tion of transition-metal dichalcogenide monolayers with an intra-orbital Hub¬bard term. We explain the influence of each orbital in the magnetic ordering, comparing the results of Mean Field Theory and determinant Quantum Monte Carlo. We focus on a gapped edge-antiferromagnetic phase appearing at three-quarter edge-filling for realistic values of the interaction.https://www.epj-conferences.org/articles/epjconf/pdf/2020/09/epjconf_cmpnc2019_03003.pdf
collection DOAJ
language English
format Article
sources DOAJ
author Brito Francisco
Castro Eduardo V.
Lopes João M.V.P.
spellingShingle Brito Francisco
Castro Eduardo V.
Lopes João M.V.P.
Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo
EPJ Web of Conferences
author_facet Brito Francisco
Castro Eduardo V.
Lopes João M.V.P.
author_sort Brito Francisco
title Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo
title_short Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo
title_full Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo
title_fullStr Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo
title_full_unstemmed Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo
title_sort multi-orbital physics of edge-magnetism in a hubbard model of transition-metal dichalcogenide nanoribbons: comparing mean field theory and determinant quantum monte carlo
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2020-01-01
description We study the emergence of edge-magnetism in zigzag nanoribbons from electron-electron interactions in a minimal 3-band tight-binding descrip¬tion of transition-metal dichalcogenide monolayers with an intra-orbital Hub¬bard term. We explain the influence of each orbital in the magnetic ordering, comparing the results of Mean Field Theory and determinant Quantum Monte Carlo. We focus on a gapped edge-antiferromagnetic phase appearing at three-quarter edge-filling for realistic values of the interaction.
url https://www.epj-conferences.org/articles/epjconf/pdf/2020/09/epjconf_cmpnc2019_03003.pdf
work_keys_str_mv AT britofrancisco multiorbitalphysicsofedgemagnetisminahubbardmodeloftransitionmetaldichalcogenidenanoribbonscomparingmeanfieldtheoryanddeterminantquantummontecarlo
AT castroeduardov multiorbitalphysicsofedgemagnetisminahubbardmodeloftransitionmetaldichalcogenidenanoribbonscomparingmeanfieldtheoryanddeterminantquantummontecarlo
AT lopesjoaomvp multiorbitalphysicsofedgemagnetisminahubbardmodeloftransitionmetaldichalcogenidenanoribbonscomparingmeanfieldtheoryanddeterminantquantummontecarlo
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