Zhumagulov, Yaroslav and Kochan, Denis and Fabian, Jaroslav (2024) Emergent Correlated Phases in Rhombohedral Trilayer Graphene Induced by Proximity Spin-Orbit and Exchange Coupling. PHYSICAL REVIEW LETTERS, 132 (18): 186401. ISSN 0031-9007, 1079-7114
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The impact of proximity-induced spin-orbit and exchange coupling on the correlated phase diagram of rhombohedral trilayer graphene (RTG) is investigated theoretically. By employing ab initio-fitted effective models of RTG encapsulated by transition metal dichalcogenides (spin-orbit proximity effect) and ferromagnetic Cr2Ge2Te6 (exchange proximity effect), we incorporate the Coulomb interactions within the random-phase approximation to explore potential correlated phases at different displacement fields and doping. We find a rich spectrum of spin-valley resolved Stoner and intervalley coherence instabilities induced by the spin-orbit proximity effects, such as the emergence of a spin-valley-coherent phase due to the presence of valley-Zeeman coupling. Similarly, proximity exchange removes the phase degeneracies by biasing the spin direction, enabling a magnetocorrelation effect-strong sensitivity of the correlated phases to the relative magnetization orientations (parallel or antiparallel) of the encapsulating ferromagnetic layers.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MAGIC-ANGLE; ELECTRON INTERACTIONS; COLLECTIVE DESCRIPTION; SUPERCONDUCTIVITY; CASCADE; TRANSITIONS; STATES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 Jul 2025 09:08 |
| Last Modified: | 29 Jul 2025 09:08 |
| URI: | https://pred.uni-regensburg.de/id/eprint/64133 |
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