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Analytical and numerical study of quantum transport in an array of nanorings: A case study with double rings

Khoeini, F ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.physe.2012.10.001
  3. Publisher: 2013
  4. Abstract:
  5. We present an analytical method to obtain an expression for electron transmission through an array of disordered nanorings (ADNRs) sandwiched between two semi-infinite metallic leads in different lead-ring coupling strengths. Our approach is based on the nearest-neighbor tight-binding approximation and transfer matrix method. First, we derive an analytical formula for electron transmission across the system. Next, we apply our approach to study of the electron transport in a perfect double nanoring (PDNR) and design a NOR gate using the magnetic fluxes inputs. The conductance, current-voltage characteristics and threshold voltage of the system are calculated in the weak and strong coupling regimes
  6. Keywords:
  7. Analytical formulas ; Coupling strengths ; Electron transmission ; Electron transport ; Nearest-neighbors ; Quantum transport ; Strong-coupling regime ; Tight-binding approximations ; Magnetic flux ; Nanostructured materials ; Quantum electronics ; Transfer matrix method ; Nanorings
  8. Source: Physica E: Low-Dimensional Systems and Nanostructures ; Volume 47 , January , 2013 , Pages 297-302 ; 13869477 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1386947712003967