Abstract
Finite size armchair graphene nanoribbons (GNRs) of different families are theoretically studied using the Hubbard model in both mean-field and GW approximations, including spin correlation effects. It is shown that correlation primarily affect the properties of topological end states of the nanoribbons. A representative structure of each of the three GNR families is considered but the seven-atom width nanoribbon is studied in detail and compared to previously published experimental results, showing a clear improvement when correlations are included. Using isolated spin contributions to scanning tunneling microscopy (STM) simulations, spin-polarized measurements in STM are also suggested to help distinguish and highlight correlation effects.
Original language | English (US) |
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Article number | 485703 |
Journal | Journal of Physics Condensed Matter |
Volume | 35 |
Issue number | 48 |
DOIs | |
State | Published - Dec 4 2023 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Condensed Matter Physics