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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2502.05035 |
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| _version_ | 1866910958370160640 |
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| author | Ulčakar, Lara Lemut, Gal Rejec, Tomaž Mravlje, Jernej |
| author_facet | Ulčakar, Lara Lemut, Gal Rejec, Tomaž Mravlje, Jernej |
| contents | We study an interacting spinless quadratic band touching model that realizes a topological Mott insulating state. We quench the interaction from a value corresponding to the nematic insulator to that of the quantum anomalous Hall (QAH) ordered phase. We perform time-dependent Hartree-Fock simulations and show that after the quench the system realizes an excited Dirac semimetal state, which is however unstable and spontaneously evolves to a state with inhomogeneous nematic and QAH order parameters. The modulations form a stripe pattern that grows exponentially with time until the local Chern marker reaches unity. The alternating QAH order defines a domain structure with boundaries that host chiral sublattice currents. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_05035 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum anomalous Hall domains in a Quenched Topological Mott Insulator Ulčakar, Lara Lemut, Gal Rejec, Tomaž Mravlje, Jernej Strongly Correlated Electrons Quantum Physics We study an interacting spinless quadratic band touching model that realizes a topological Mott insulating state. We quench the interaction from a value corresponding to the nematic insulator to that of the quantum anomalous Hall (QAH) ordered phase. We perform time-dependent Hartree-Fock simulations and show that after the quench the system realizes an excited Dirac semimetal state, which is however unstable and spontaneously evolves to a state with inhomogeneous nematic and QAH order parameters. The modulations form a stripe pattern that grows exponentially with time until the local Chern marker reaches unity. The alternating QAH order defines a domain structure with boundaries that host chiral sublattice currents. |
| title | Quantum anomalous Hall domains in a Quenched Topological Mott Insulator |
| topic | Strongly Correlated Electrons Quantum Physics |
| url | https://arxiv.org/abs/2502.05035 |