| Issue |
EPJ Web Conf.
Volume 233, 2020
Portuguese Condensed Matter Physics National Conference (CMPNC 2019)
|
|
|---|---|---|
| Article Number | 05010 | |
| Number of page(s) | 6 | |
| Section | Thin films, Nanostructures, Artificially Structured Materials, Device Physics | |
| DOI | https://doi.org/10.1051/epjconf/202023305010 | |
| Published online | 16 April 2020 | |
https://doi.org/10.1051/epjconf/202023305010
Numerical Simulation of Non-Equilibrium Stationary Currents Through Nano-scale One-Dimensional Chains
1 Centro de Física das Universidades do Porto e Minho
2 Faculty of Sciences, University of Porto, Rua do Campo Alegre 4169-007, Porto, Portugal
3 University of Minho, Campus of Gualtar, 4710-057, Braga, Portugal
* Corresponding author: up201201453@fc.up.pt
Published online: 16 April 2020
Using a method based on the time-evolution of the occupied states at zero temperature, we observe the onset of a quasi-uniform and quasisteady state current across a disordered tight-binding chain, coupled between two finite (but large) clean leads with open boundaries. This current is seen to match the one obtained in the Landauer-Büttiker formalism and is also independent of the initial condition considered (partitioned or non-partitioned). Finite-size effects are also reported and briefly discussed.
© The Authors, published by EDP Sciences, 2020
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