Authors
Abstract
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.
Keywords
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3. S Coh, S G Louie, and M L Cohen, Phys. Rev. B 88 (2013) 045424.
4. M V Kovalenko et al., American Chemical Society Nano 9, 2 (2015) 1012.
5. M G Panthani and B A Korgel, Annu. Rev. Chem. Biomol. Eng. 3 (2012) 287.
6. T Chen, K V Reich, N J Kramer, H F U R Kortshagen, and B I Shklovskii, Nature Materials 15 (2016) 299.
7. I Kriegel and F Scotognella Thin Solid Films 612 (2016) 327.
8. A Shabaev, A L Efros, and A L Efros Nano Lett.13 (2013) 5454.
9. A Sahu et al., Nano Lett. 12 (2012) 2587.
10. M Mardaani and H Rabani, Superlattices and Microstructures 59 (2013) 155.
11. M Mardaani and H Mardaani, Physica E 33 (2006) 147.
12. M Mardaani, H Rabani, and F Aghababaei, Iranian Journal of Physics Research 13, 3 (2013) 303.
13. R Landauer, IBM J. Res. Dev. 1 (1957) 223.
14. M Mardaani and K Esfarjani, Physica E 25 (2004) 119.
15. S Datta, “Electronic Transport in Mesoscopic Systems”, Cambridge University Press, Cambridge (1997).
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