Journal of Research on Many-body Systems

Journal of Research on Many-body Systems

Transport in quantum dots resonant tunneling diodes

Document Type : supplement

Author
Dept Physics, Isfahan University of Technology
Abstract
In this paper, we simulate a resonant tunneling diode (RTD). Using Green's function method for the tight-binding approximation, we calculate local density of states and current-voltage characteristic by the Green function components of the system. Results show a non-Ohmic behavior and negative differential resistance in RTD. As a result of a longitudinal electric field, the local density of states varies by changing the applied potential. Moreover, we study the effect of changing the physical parameters on the current of the device. Entering quantum dots in the middle of device causes a negative differential resistance, which is a consequence of resonant tunneling phenomenon.
Keywords

Volume 6, Special Issue (2)
The Conference on Many-Body Systems (Bulk and Nano-scale). K. N. Toosi University of Technology, 12 November 2015
Autumn 2016
Pages 21-25

  • Receive Date 04 February 2016
  • Revise Date 26 April 2016
  • Accept Date 19 December 2016