Topological phase transition from periodic edge states in moiré superlattices ...
Topological mosaic pattern (TMP) can be formed in two-dimensional (2D) moiré superlattices, a set of periodic and spatially separated domains with distinct topologies give rise to periodic edge states on the domain walls. In this study, we demonstrate that these periodic edge states play a crucial r...
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Online Access: | https://dx.doi.org/10.48550/arxiv.2304.05496 https://arxiv.org/abs/2304.05496 |
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ftdatacite:10.48550/arxiv.2304.05496 2023-06-11T04:13:20+02:00 Topological phase transition from periodic edge states in moiré superlattices ... Wang, Haonan Yang, Li 2023 https://dx.doi.org/10.48550/arxiv.2304.05496 https://arxiv.org/abs/2304.05496 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Materials Science cond-mat.mtrl-sci FOS Physical sciences CreativeWork Article article Preprint 2023 ftdatacite https://doi.org/10.48550/arxiv.2304.05496 2023-05-02T10:00:20Z Topological mosaic pattern (TMP) can be formed in two-dimensional (2D) moiré superlattices, a set of periodic and spatially separated domains with distinct topologies give rise to periodic edge states on the domain walls. In this study, we demonstrate that these periodic edge states play a crucial role in determining global topological properties. By developing a continuum model for periodic edge states with C6z and C3z rotational symmetry, we predict that a global topological phase transition at the charge neutrality point (CNP) can be driven by the size of domain walls and moiré periodicity. The Wannier representation analysis reveals that these periodic edge states are fundamentally chiral px +- ipy orbitals. The interplay between on-site chiral orbital rotation and neighboring hopping among chiral orbitals leads to band inversion and a topological phase transition. Our work establishes a general model for tuning local and global topological phases, paving the way for future research on strongly ... Report IPY DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Materials Science cond-mat.mtrl-sci FOS Physical sciences |
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Materials Science cond-mat.mtrl-sci FOS Physical sciences Wang, Haonan Yang, Li Topological phase transition from periodic edge states in moiré superlattices ... |
topic_facet |
Materials Science cond-mat.mtrl-sci FOS Physical sciences |
description |
Topological mosaic pattern (TMP) can be formed in two-dimensional (2D) moiré superlattices, a set of periodic and spatially separated domains with distinct topologies give rise to periodic edge states on the domain walls. In this study, we demonstrate that these periodic edge states play a crucial role in determining global topological properties. By developing a continuum model for periodic edge states with C6z and C3z rotational symmetry, we predict that a global topological phase transition at the charge neutrality point (CNP) can be driven by the size of domain walls and moiré periodicity. The Wannier representation analysis reveals that these periodic edge states are fundamentally chiral px +- ipy orbitals. The interplay between on-site chiral orbital rotation and neighboring hopping among chiral orbitals leads to band inversion and a topological phase transition. Our work establishes a general model for tuning local and global topological phases, paving the way for future research on strongly ... |
format |
Report |
author |
Wang, Haonan Yang, Li |
author_facet |
Wang, Haonan Yang, Li |
author_sort |
Wang, Haonan |
title |
Topological phase transition from periodic edge states in moiré superlattices ... |
title_short |
Topological phase transition from periodic edge states in moiré superlattices ... |
title_full |
Topological phase transition from periodic edge states in moiré superlattices ... |
title_fullStr |
Topological phase transition from periodic edge states in moiré superlattices ... |
title_full_unstemmed |
Topological phase transition from periodic edge states in moiré superlattices ... |
title_sort |
topological phase transition from periodic edge states in moiré superlattices ... |
publisher |
arXiv |
publishDate |
2023 |
url |
https://dx.doi.org/10.48550/arxiv.2304.05496 https://arxiv.org/abs/2304.05496 |
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IPY |
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IPY |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.2304.05496 |
_version_ |
1768390194585665536 |