| Full text | |
| Author(s): |
Braz, Lauro B.
;
Nag, Tanay
;
Black-Schaffer, Annica M.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW B; v. 110, n. 24, p. 8-pg., 2024-12-03. |
| Abstract | |
We study interaction-mediated magnetism on the surface of ABC-multilayer graphene driven by its zero- energy topological flat bands. Using the random-phase approximation, we treat onsite Hubbard repulsion and find multiple competing magnetic states, due to both intraand intervalley scattering, with the latter causing an enlarged magnetic unit cell. At half-filling and when the Hubbard repulsion is weak, we observe two different ferromagnetic orders. Once the Hubbard repulsion becomes more realistic, new ferrimagnetic orders arise with distinct incommensurate intraor intervalley scattering vectors depending on interaction strength and doping, leading to a multitude of competing magnetic states. (AU) | |
| FAPESP's process: | 23/14902-8 - Interplay of superconductivity and interactions in multi-orbital, multivalley electronic systems |
| Grantee: | Lauro Barreto Braz |
| Support Opportunities: | Scholarships in Brazil - Doctorate |