The study of electronic conductance of a nanoribbon with square lattice including some impurities

• Main Authors: M Jamshidi Farsani, H Rabani, M Mardaani
• Format: Article
• Language: English
• Published: Isfahan University of Technology 2019-06-01
• Series: Iranian Journal of Physics Research
• Subjects: electronic conductance; nanoribbon; electrical impurity; Green’s function
• Online Access: http://ijpr.iut.ac.ir/browse.php?a_code=A-10-198-13&slc_lang=en&sid=1

In this paper, we study the electronic conductance of a nanoribbon with square lattice by using Green’s function theory within the tight-binding approach. For this purpose, we separate the conductance modes in the ideal parts by using a suitable unitary transformation in order to obtain the analytic formula for the corresponding self-energies. Then, we present a fast computer algorithm based on the Fisher-Lee formula for the calculation of the system conductance. The results show that the distribution of electrical impurities with different on-site energies leads to the different values of the system electronic conductance and it is generally decreasing.