Gap engineering in strained fold-like armchair graphene nanoribbons
| Autor: | Daiara Faria, V. Torres, Carlos León, Andrea Latge |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Band gap FOS: Physical sciences Nanotechnology 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences symbols.namesake Dirac equation Bounded function 0103 physical sciences Ribbon Mesoscale and Nanoscale Physics (cond-mat.mes-hall) symbols 010306 general physics 0210 nano-technology Graphene nanoribbons Electronic properties |
| DOI: | 10.48550/arxiv.1701.01543 |
| Popis: | Strain fold-like deformations on armchair graphene nanoribbons (AGNRs) can be properly engineered in experimental setups, and could lead to a new controlling tool for gaps and transport properties. Here, we analyze the electronic properties of folded AGNRs relating the electronic responses and the mechanical deformation. An important and universal parameter for the gap engineering is the ribbon percent width variation, i.e., the difference between the deformed and undeformed ribbon widths. AGNRs bandgap can be tuned mechanically in a well defined bounded range of energy values, eventually leading to a metallic system. This characteristic provides a new controllable degree of freedom that allows manipulation of electronic currents. We show that the numerical results are analytically predicted by solving the Dirac equation for the strained system. |
| Databáze: | OpenAIRE |
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