Flat Bands for Electrons in Rhombohedral Graphene Multilayers with a Twin Boundary
Abstract Topologically protected flat surface bands make thin films of rhombohedral graphite an appealing platform for searching for strongly correlated states of 2D electrons. In this work, rhombohedral graphite is studied with a twin boundary stacking fault and the semimetallic and topological pro...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-03-01
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| Series: | Advanced Materials Interfaces |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/admi.202202221 |
| _version_ | 1797772473406586880 |
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| author | Aitor Garcia‐Ruiz Sergey Slizovskiy Vladimir I. Fal'ko |
| author_facet | Aitor Garcia‐Ruiz Sergey Slizovskiy Vladimir I. Fal'ko |
| author_sort | Aitor Garcia‐Ruiz |
| collection | DOAJ |
| description | Abstract Topologically protected flat surface bands make thin films of rhombohedral graphite an appealing platform for searching for strongly correlated states of 2D electrons. In this work, rhombohedral graphite is studied with a twin boundary stacking fault and the semimetallic and topological properties of low‐energy bands, localized at the surfaces and at the twinned interface, are analyzed. An effective 4‐band low energy model is derived, where the full set of Slonczewski–Weiss–McClure (SWMcC) parameters is implemented, and the conditions for the bands are found to be localized at the twin boundary, protected from the environment‐induced disorder. This protection together with a high density of states at the charge neutrality point, in some cases—due to a Lifshitz transition, makes this system a promising candidate for hosting strongly‐correlated effects. |
| first_indexed | 2024-03-12T21:52:28Z |
| format | Article |
| id | doaj.art-a0f682ded6874963ab0eef41c522e179 |
| institution | Directory Open Access Journal |
| issn | 2196-7350 |
| language | English |
| last_indexed | 2024-03-12T21:52:28Z |
| publishDate | 2023-03-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj.art-a0f682ded6874963ab0eef41c522e1792023-07-26T01:36:19ZengWiley-VCHAdvanced Materials Interfaces2196-73502023-03-01107n/an/a10.1002/admi.202202221Flat Bands for Electrons in Rhombohedral Graphene Multilayers with a Twin BoundaryAitor Garcia‐Ruiz0Sergey Slizovskiy1Vladimir I. Fal'ko2National Graphene Institute University of Manchester Booth Street East Manchester M13 9PL UKNational Graphene Institute University of Manchester Booth Street East Manchester M13 9PL UKNational Graphene Institute University of Manchester Booth Street East Manchester M13 9PL UKAbstract Topologically protected flat surface bands make thin films of rhombohedral graphite an appealing platform for searching for strongly correlated states of 2D electrons. In this work, rhombohedral graphite is studied with a twin boundary stacking fault and the semimetallic and topological properties of low‐energy bands, localized at the surfaces and at the twinned interface, are analyzed. An effective 4‐band low energy model is derived, where the full set of Slonczewski–Weiss–McClure (SWMcC) parameters is implemented, and the conditions for the bands are found to be localized at the twin boundary, protected from the environment‐induced disorder. This protection together with a high density of states at the charge neutrality point, in some cases—due to a Lifshitz transition, makes this system a promising candidate for hosting strongly‐correlated effects.https://doi.org/10.1002/admi.202202221berry curvatureelectronic band structuregraphenetight‐bindingtwin boundary interface |
| spellingShingle | Aitor Garcia‐Ruiz Sergey Slizovskiy Vladimir I. Fal'ko Flat Bands for Electrons in Rhombohedral Graphene Multilayers with a Twin Boundary Advanced Materials Interfaces berry curvature electronic band structure graphene tight‐binding twin boundary interface |
| title | Flat Bands for Electrons in Rhombohedral Graphene Multilayers with a Twin Boundary |
| title_full | Flat Bands for Electrons in Rhombohedral Graphene Multilayers with a Twin Boundary |
| title_fullStr | Flat Bands for Electrons in Rhombohedral Graphene Multilayers with a Twin Boundary |
| title_full_unstemmed | Flat Bands for Electrons in Rhombohedral Graphene Multilayers with a Twin Boundary |
| title_short | Flat Bands for Electrons in Rhombohedral Graphene Multilayers with a Twin Boundary |
| title_sort | flat bands for electrons in rhombohedral graphene multilayers with a twin boundary |
| topic | berry curvature electronic band structure graphene tight‐binding twin boundary interface |
| url | https://doi.org/10.1002/admi.202202221 |
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