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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
Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo
Type
Article in International Scientific Journal
Year
2020
Authors
Brito, F
(Author)
Other
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Eduardo V Castro
(Author)
FCUP
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Lopes, JV
(Author)
FCUP
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Journal
ISSN: 2101-6275
Publisher: EDP Sciences
Other information
Authenticus ID: P-00S-0NY
Abstract (EN): <jats:p>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.</jats:p>
Language: English
Type (Professor's evaluation): Scientific
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