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- W4307769356 abstract "Motivated by recent experimental work on moir'e systems in a strong magnetic field, we compute the compressibility as well as the spin correlations and Hofstadter spectrum of spinful electrons on a honeycomb lattice with Hubbard interactions using the determinantal quantum Monte Carlo method. While the interactions in general preserve quantum and anomalous Hall states, emergent features arise corresponding to an antiferromagnetic insulator at half-filling and other incompressible states following the Chern sequence $pm (2N+1)$. These odd integer Chern states exhibit strong ferromagnetic correlations and arise spontaneously without any external mechanism for breaking the spin-rotation symmetry. Analogs of these magnetic states should be observable in general interacting quantum Hall systems. In addition, the interacting Hofstadter spectrum is qualitatively similar to the experimental data at intermediate values of the on-site interaction." @default.
- W4307769356 created "2022-11-05" @default.
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- W4307769356 date "2022-05-17" @default.
- W4307769356 modified "2023-09-30" @default.
- W4307769356 title "Interaction-driven Spontaneous Ferromagnetic Insulating States with Odd Chern Numbers" @default.
- W4307769356 doi "https://doi.org/10.48550/arxiv.2205.08545" @default.
- W4307769356 hasPublicationYear "2022" @default.
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