Tunable Superlattice in Graphene To Control the Number of Dirac Points
Superlattice in graphene generates extra Dirac points in the band structure and their number depends on the superlattice potential strength. Here, we have created a lateral superlattice in a graphene device with a tunable barrier height using a combination of two gates. In this Letter, we demonstrat...
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| Veröffentlicht in: | Nano letters 2013-09, Vol.13 (9), p.3990-3995 |
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| container_end_page | 3995 |
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| container_issue | 9 |
| container_start_page | 3990 |
| container_title | Nano letters |
| container_volume | 13 |
| creator | Dubey, Sudipta Singh, Vibhor Bhat, Ajay K Parikh, Pritesh Grover, Sameer Sensarma, Rajdeep Tripathi, Vikram Sengupta, K Deshmukh, Mandar M |
| description | Superlattice in graphene generates extra Dirac points in the band structure and their number depends on the superlattice potential strength. Here, we have created a lateral superlattice in a graphene device with a tunable barrier height using a combination of two gates. In this Letter, we demonstrate the use of lateral superlattice to modify the band structure of graphene leading to the emergence of new Dirac cones. This controlled modification of the band structure persists up to 100 K. |
| doi_str_mv | 10.1021/nl4006029 |
| format | Article |
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Here, we have created a lateral superlattice in a graphene device with a tunable barrier height using a combination of two gates. In this Letter, we demonstrate the use of lateral superlattice to modify the band structure of graphene leading to the emergence of new Dirac cones. 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| source | ACS Journals |
| subjects | Band structure of solids Barriers Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science rheology Devices Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Electronic structure of nanoscale materials : clusters, nanoparticles, nanotubes, and nanocrystals Emergence Exact sciences and technology Fullerenes and related materials diamonds, graphite Gates Graphene Materials science Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Nanostructure Physics Specific materials Structure of solids and liquids crystallography Superlattices |
| title | Tunable Superlattice in Graphene To Control the Number of Dirac Points |
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