Journal article
Chern-textured exciton insulators with valley spiral order in moiré materials
- Abstract:
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We explore the phase diagrams of moiré materials in search of a class of intervalley-coherent correlated insulating state: the Chern texture insulator (CTI). This phase of matter, proposed in a companion paper [Kwan et al., Phys. Rev. B 112, 035129 (2025).], breaks valley U(1) symmetry in a nontrivial fashion wherein the valley order parameter is forced to texture in momentum space as a consequence of band topology. Using detailed Hartree-Fock studies, we establish that the CTI emerges as an energetically competitive intermediate-coupling ground state in several moiré systems that lack a twofold rotation symmetry that forbids the single-particle topology essential to the formation of the CTI valley texture.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 3.2MB, Terms of use)
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- Publisher copy:
- 10.1103/chsd-123t
Authors
- Funder identifier:
- https://ror.org/0472cxd90
- Grant:
- 804213
- Funder identifier:
- https://ror.org/0439y7842
- Grant:
- EP/S020527/1
- EP/X030881/1
- Publisher:
- American Physical Society
- Journal:
- Physical Review B (condensed matter and materials physics) More from this journal
- Volume:
- 112
- Issue:
- 3
- Article number:
- 35130
- Publication date:
- 2025-07-11
- Acceptance date:
- 2025-03-11
- DOI:
- EISSN:
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2469-9969
- ISSN:
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2469-9950
- Language:
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English
- Keywords:
- Pubs id:
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2275590
- Local pid:
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pubs:2275590
- Deposit date:
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2025-08-21
- ARK identifier:
Terms of use
- Copyright holder:
- Wang et al.
- Copyright date:
- 2025
- Rights statement:
- Copyright © 2025 The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
- Licence:
- CC Attribution (CC BY)
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