| Issue |
EPJ Web Conf.
Volume 233, 2020
Portuguese Condensed Matter Physics National Conference (CMPNC 2019)
|
|
|---|---|---|
| Article Number | 03003 | |
| Number of page(s) | 6 | |
| Section | 2D Materials, Complex Systems and Statistical and Nonlinear Physics | |
| DOI | https://doi.org/10.1051/epjconf/202023303003 | |
| Published online | 16 April 2020 | |
https://doi.org/10.1051/epjconf/202023303003
Multi-orbital physics of edge-magnetism in a Hubbard model of transition-metal dichalcogenide nanoribbons: Comparing Mean Field Theory and Determinant Quantum Monte Carlo
Centro de Física das Universidades do Minho e Porto, Departamento de Física e Astronomia, Facul-dade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal
* Corresponding author: francisco.brito@fc.up.pt
** Corresponding author: evcastro@fc.up.pt
*** Corresponding author: jlopes@fc.up.pt
Published online: 16 April 2020
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.
© The Authors, published by EDP Sciences, 2020
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