Antichiral states in twisted graphene multilayers
The advent of topological phases of matter revealed a variety of observed boundary phenomena, such as chiral and helical modes found at the edges of two-dimensional (2D) topological insulators. Antichiral states in 2D semimetals, i.e., copropagating edge modes on opposite edges compensated by a coun...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-11-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.043190 |
| _version_ | 1797211188611776512 |
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| author | M. Michael Denner J. L. Lado Oded Zilberberg |
| author_facet | M. Michael Denner J. L. Lado Oded Zilberberg |
| author_sort | M. Michael Denner |
| collection | DOAJ |
| description | The advent of topological phases of matter revealed a variety of observed boundary phenomena, such as chiral and helical modes found at the edges of two-dimensional (2D) topological insulators. Antichiral states in 2D semimetals, i.e., copropagating edge modes on opposite edges compensated by a counterpropagating bulk current, are also predicted, but, to date, no realization of such states in a solid-state system has been found. Here, we put forward a procedure to realize antichiral states in twisted van der Waals multilayers, by combining the electronic Dirac-cone spectra of each layer through the combination of the orbital moiré superstructure, an in-plane magnetic field, and interlayer bias voltage. In particular, we demonstrate that a twisted van der Waals heterostructure consisting of graphene/two layers of hexagonal boron nitride [(hBN)_{2}]/graphene will show antichiral states at in-plane magnetic fields of 8 T, for a rotation angle of 0.2^{∘} between the graphene layers. Our findings engender a controllable procedure to engineer antichiral states in solid-state systems, as well as in quantum engineered metamaterials. |
| first_indexed | 2024-04-24T10:22:31Z |
| format | Article |
| id | doaj.art-2a22f583499746faac4ae540a5248ac7 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:22:31Z |
| publishDate | 2020-11-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-2a22f583499746faac4ae540a5248ac72024-04-12T17:03:30ZengAmerican Physical SocietyPhysical Review Research2643-15642020-11-012404319010.1103/PhysRevResearch.2.043190Antichiral states in twisted graphene multilayersM. Michael DennerJ. L. LadoOded ZilberbergThe advent of topological phases of matter revealed a variety of observed boundary phenomena, such as chiral and helical modes found at the edges of two-dimensional (2D) topological insulators. Antichiral states in 2D semimetals, i.e., copropagating edge modes on opposite edges compensated by a counterpropagating bulk current, are also predicted, but, to date, no realization of such states in a solid-state system has been found. Here, we put forward a procedure to realize antichiral states in twisted van der Waals multilayers, by combining the electronic Dirac-cone spectra of each layer through the combination of the orbital moiré superstructure, an in-plane magnetic field, and interlayer bias voltage. In particular, we demonstrate that a twisted van der Waals heterostructure consisting of graphene/two layers of hexagonal boron nitride [(hBN)_{2}]/graphene will show antichiral states at in-plane magnetic fields of 8 T, for a rotation angle of 0.2^{∘} between the graphene layers. Our findings engender a controllable procedure to engineer antichiral states in solid-state systems, as well as in quantum engineered metamaterials.http://doi.org/10.1103/PhysRevResearch.2.043190 |
| spellingShingle | M. Michael Denner J. L. Lado Oded Zilberberg Antichiral states in twisted graphene multilayers Physical Review Research |
| title | Antichiral states in twisted graphene multilayers |
| title_full | Antichiral states in twisted graphene multilayers |
| title_fullStr | Antichiral states in twisted graphene multilayers |
| title_full_unstemmed | Antichiral states in twisted graphene multilayers |
| title_short | Antichiral states in twisted graphene multilayers |
| title_sort | antichiral states in twisted graphene multilayers |
| url | http://doi.org/10.1103/PhysRevResearch.2.043190 |
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