Sorting the modes contributing to guidance in strain-induced graphene waveguides
We propose a simple way of probing the number of modes contributing to the channeling in graphene waveguides which are formed by a gauge potential produced by mechanical strain. The energy mode structure for both homogeneous and non-homogeneous strain regimes is carefully studied using the continuum...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/2/023015 |
| _version_ | 1797751743456477184 |
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| author | Cesar E P Villegas Marcos R S Tavares G-Q Hai F M Peeters |
| author_facet | Cesar E P Villegas Marcos R S Tavares G-Q Hai F M Peeters |
| author_sort | Cesar E P Villegas |
| collection | DOAJ |
| description | We propose a simple way of probing the number of modes contributing to the channeling in graphene waveguides which are formed by a gauge potential produced by mechanical strain. The energy mode structure for both homogeneous and non-homogeneous strain regimes is carefully studied using the continuum description of the Dirac equation. We found that high strain values privilege negative (instead of positive) group velocities throughout the guidance, sorting the types of modes flowing through it. We also show how the effect of a substrate-induced gap competes against the strain. |
| first_indexed | 2024-03-12T16:53:04Z |
| format | Article |
| id | doaj.art-d95e1b76c2ed4c0b9505d4feaf073b90 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:53:04Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-d95e1b76c2ed4c0b9505d4feaf073b902023-08-08T11:05:01ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115202301510.1088/1367-2630/15/2/023015Sorting the modes contributing to guidance in strain-induced graphene waveguidesCesar E P Villegas0Marcos R S Tavares1G-Q Hai2F M Peeters3Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , 09210-170 Santo André, SP, BrazilCentro de Ciências Naturais e Humanas, Universidade Federal do ABC , 09210-170 Santo André, SP, BrazilInstituto de Física de São Carlos, Universidade de São Paulo , 13560-970 São Carlos, SP, BrazilDepartement Fysica, Universiteit Antwerpen , Groenenborgerlaan 171, B-2020 Antwerpen, Belgium; Departamento de Física, Universidade Federal do Ceará , 60455-760 Fortaleza, CE, BrazilWe propose a simple way of probing the number of modes contributing to the channeling in graphene waveguides which are formed by a gauge potential produced by mechanical strain. The energy mode structure for both homogeneous and non-homogeneous strain regimes is carefully studied using the continuum description of the Dirac equation. We found that high strain values privilege negative (instead of positive) group velocities throughout the guidance, sorting the types of modes flowing through it. We also show how the effect of a substrate-induced gap competes against the strain.https://doi.org/10.1088/1367-2630/15/2/023015 |
| spellingShingle | Cesar E P Villegas Marcos R S Tavares G-Q Hai F M Peeters Sorting the modes contributing to guidance in strain-induced graphene waveguides New Journal of Physics |
| title | Sorting the modes contributing to guidance in strain-induced graphene waveguides |
| title_full | Sorting the modes contributing to guidance in strain-induced graphene waveguides |
| title_fullStr | Sorting the modes contributing to guidance in strain-induced graphene waveguides |
| title_full_unstemmed | Sorting the modes contributing to guidance in strain-induced graphene waveguides |
| title_short | Sorting the modes contributing to guidance in strain-induced graphene waveguides |
| title_sort | sorting the modes contributing to guidance in strain induced graphene waveguides |
| url | https://doi.org/10.1088/1367-2630/15/2/023015 |
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