Electron transport in ladder-shaped graphene cuts
| Autor: | Maryam Jamaati, Ali Mehri |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Computer Science Condensed matter physics Graphene General Physics and Astronomy Insulator (electricity) 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electron transport chain 0104 chemical sciences law.invention k-nearest neighbors algorithm Computational Mathematics Tight binding Electrical resistance and conductance Mechanics of Materials law General Materials Science Function method 0210 nano-technology |
| Zdroj: | Computational Materials Science. 158:265-271 |
| ISSN: | 0927-0256 |
| DOI: | 10.1016/j.commatsci.2018.11.037 |
| Popis: | We numerically investigate electrical conductance of ladder-shaped graphene cuts (LGCs). Our calculations are performed by using non-equilibrium Green’s function method, in the nearest neighbor tight binding approximation. Our findings reveal strong sensitivity of electron transport through side rails of LGC to number, length and width of its rungs. Adding more rungs to ladder destroys the transport process in side rails. By lengthening the rungs transmission increases and finally tends to a constant value. Rungs widening has also destructive effect on electron transport via side rails. The results show that the transport properties of the LGC could be tuned via changing its structure, to discover transition from metal to insulator and vice versa. We also find that, lengthening of the ladder decreases transport along its side rails. |
| Databáze: | OpenAIRE |
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