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Manipulating the anisotropy of the Dirac-Cone in graphene by laser fields
One of the most striking properties of graphene is the relativistic-like Dirac-Cone spectrum of charge carriers. By applying high-frequency laser fields, the system can be described with the use of similar spectrum which is based on a concept of electron quasi-energy. There in this spectrum a creati...
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| Format: | Default Article |
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2019
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| Online Access: | https://hdl.handle.net/2134/37660 |
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| _version_ | 1818168605045424128 |
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| author | Shahd A.A. Alfadhli Feodor Kusmartsev Sergey Saveliev |
| author_facet | Shahd A.A. Alfadhli Feodor Kusmartsev Sergey Saveliev |
| author_sort | Shahd A.A. Alfadhli (7170704) |
| collection | Figshare |
| description | One of the most striking properties of graphene is the relativistic-like Dirac-Cone spectrum of charge carriers. By applying high-frequency laser fields, the system can be described with the use of similar spectrum which is based on a concept of electron quasi-energy. There in this spectrum a creation and annihilation of new Dirac points and cones as well as opening a gap may arise. This allows controlling electron motion without applying DC periodic fields which are effectively described by graphene superlattices. Here we demonstrate that coherent electromagnetic fields applied to graphene can generate new Dirac and Weyl points, induce Lifshitz quantum phase transition for slightly doped graphene and produce an anisotropy of the Dirac cones, which can be even infinite. |
| format | Default Article |
| id | rr-article-9408035 |
| institution | Loughborough University |
| publishDate | 2019 |
| record_format | Figshare |
| spelling | rr-article-94080352019-04-15T00:00:00Z Manipulating the anisotropy of the Dirac-Cone in graphene by laser fields Shahd A.A. Alfadhli (7170704) Feodor Kusmartsev (1251207) Sergey Saveliev (1250619) Other physical sciences not elsewhere classified Solid state and materials Physical Sciences not elsewhere classified One of the most striking properties of graphene is the relativistic-like Dirac-Cone spectrum of charge carriers. By applying high-frequency laser fields, the system can be described with the use of similar spectrum which is based on a concept of electron quasi-energy. There in this spectrum a creation and annihilation of new Dirac points and cones as well as opening a gap may arise. This allows controlling electron motion without applying DC periodic fields which are effectively described by graphene superlattices. Here we demonstrate that coherent electromagnetic fields applied to graphene can generate new Dirac and Weyl points, induce Lifshitz quantum phase transition for slightly doped graphene and produce an anisotropy of the Dirac cones, which can be even infinite. 2019-04-15T00:00:00Z Text Journal contribution 2134/37660 https://figshare.com/articles/journal_contribution/Manipulating_the_anisotropy_of_the_Dirac-Cone_in_graphene_by_laser_fields/9408035 CC BY 4.0 |
| spellingShingle | Other physical sciences not elsewhere classified Solid state and materials Physical Sciences not elsewhere classified Shahd A.A. Alfadhli Feodor Kusmartsev Sergey Saveliev Manipulating the anisotropy of the Dirac-Cone in graphene by laser fields |
| title | Manipulating the anisotropy of the Dirac-Cone in graphene by laser fields |
| title_full | Manipulating the anisotropy of the Dirac-Cone in graphene by laser fields |
| title_fullStr | Manipulating the anisotropy of the Dirac-Cone in graphene by laser fields |
| title_full_unstemmed | Manipulating the anisotropy of the Dirac-Cone in graphene by laser fields |
| title_short | Manipulating the anisotropy of the Dirac-Cone in graphene by laser fields |
| title_sort | manipulating the anisotropy of the dirac-cone in graphene by laser fields |
| topic | Other physical sciences not elsewhere classified Solid state and materials Physical Sciences not elsewhere classified |
| url | https://hdl.handle.net/2134/37660 |