π-fluxes, semimetals, and flat bands in artificial materials
The possibility of engineering experimentally viable systems that realize gauge fluxes within plaquettes of hopping has been the subject of a search for decades due to vast amounts of theoretical study. This is of particular interest for topological band insulators, where it is known that such fluxe...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2019-11-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.1.032027 |
| _version_ | 1797211655802716160 |
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| author | Toshikaze Kariyado Robert-Jan Slager |
| author_facet | Toshikaze Kariyado Robert-Jan Slager |
| author_sort | Toshikaze Kariyado |
| collection | DOAJ |
| description | The possibility of engineering experimentally viable systems that realize gauge fluxes within plaquettes of hopping has been the subject of a search for decades due to vast amounts of theoretical study. This is of particular interest for topological band insulators, where it is known that such fluxes bind protected midgap states. These modes can hybridize in extended flux lattices, giving rise to semimetallic bands that are highly tunable. We demonstrate that within artificial materials, local π-fluxes can be naturally realized. Also, the importance of the crystalline symmetry for protecting the π-flux modes is pointed out. Consequently, we provide concrete setups and conditions to access this physics and analyze similar self-organized band structures and physical properties. Our work therefore not only pinpoints simple systems exhibiting flat bands but also opens up a route to study flux lattice models and associated effective theories. |
| first_indexed | 2024-04-24T10:29:57Z |
| format | Article |
| id | doaj.art-2462bb8a30954b758e133230a95739c7 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:29:57Z |
| publishDate | 2019-11-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-2462bb8a30954b758e133230a95739c72024-04-12T16:47:16ZengAmerican Physical SocietyPhysical Review Research2643-15642019-11-011303202710.1103/PhysRevResearch.1.032027π-fluxes, semimetals, and flat bands in artificial materialsToshikaze KariyadoRobert-Jan SlagerThe possibility of engineering experimentally viable systems that realize gauge fluxes within plaquettes of hopping has been the subject of a search for decades due to vast amounts of theoretical study. This is of particular interest for topological band insulators, where it is known that such fluxes bind protected midgap states. These modes can hybridize in extended flux lattices, giving rise to semimetallic bands that are highly tunable. We demonstrate that within artificial materials, local π-fluxes can be naturally realized. Also, the importance of the crystalline symmetry for protecting the π-flux modes is pointed out. Consequently, we provide concrete setups and conditions to access this physics and analyze similar self-organized band structures and physical properties. Our work therefore not only pinpoints simple systems exhibiting flat bands but also opens up a route to study flux lattice models and associated effective theories.http://doi.org/10.1103/PhysRevResearch.1.032027 |
| spellingShingle | Toshikaze Kariyado Robert-Jan Slager π-fluxes, semimetals, and flat bands in artificial materials Physical Review Research |
| title | π-fluxes, semimetals, and flat bands in artificial materials |
| title_full | π-fluxes, semimetals, and flat bands in artificial materials |
| title_fullStr | π-fluxes, semimetals, and flat bands in artificial materials |
| title_full_unstemmed | π-fluxes, semimetals, and flat bands in artificial materials |
| title_short | π-fluxes, semimetals, and flat bands in artificial materials |
| title_sort | π fluxes semimetals and flat bands in artificial materials |
| url | http://doi.org/10.1103/PhysRevResearch.1.032027 |
| work_keys_str_mv | AT toshikazekariyado pfluxessemimetalsandflatbandsinartificialmaterials AT robertjanslager pfluxessemimetalsandflatbandsinartificialmaterials |