Journal of Research on Many-body Systems

Journal of Research on Many-body Systems

Analytical study of the electronic transport of poly-para-phenylene at the second neighbor approximation

Document Type : supplement

Authors
Ashrafalsadat Shariati
esmat esmaili
hasan rabani
mohammad mardani
shahrekord university
10.22055/jrmbs.2016.12460
Abstract
In this paper, we study the electronic conductance of a poly-para-phenylene oligomer which is embedded between two simple metallic leads within the tight-binding approach and by considering the nearest and next neighbor electron hopping energies. At the first, the Hamiltonian of the poly-para-phenylene oligomer is converted to the Hamiltonian of a polyacetylene-like chain. Then, with help of Green’s function method, an analytic formula is given in order to calculate the electronic transmission coefficient. The numerical results show that the second neighbor interaction destroys the symmetry of the electron transmission as a function of energy with respect to zero energy. Moreover, due to the destructive quantum interference effect, in the conductance spectra we see more anti-resonances and also a Fano resonance will be observed.
Keywords
poly-para-phenylene
Green’s function
tight-binding
next neighbor
Journal of Research on Many-body Systems
Volume 6, Special Issue (1)
First national conference of nanophysics and metamaterial from simulation to industry 10/2015
Autumn 2016
Pages 37-41

  • Receive Date 30 November 2015
  • Revise Date 08 March 2016
  • Accept Date 12 December 2016