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Computer Simulation of the Electric Transport Properties of the FeSe Monolayer Cover

Computer Simulation of the Electric Transport Properties of the FeSe Monolayer

Open Access
|Dec 2020

Abstract

The paper deals with the model research of electric transport characteristics of stressed and non-stressed FeSe monolayers. Transmission spectra, current-voltage characteristic (CVC) and differential conductivity spectra of two-dimensional FeSe nanostructure have been calculated within the framework of the density functional theory and non-equilibrium Green’s functions (DFT + NEGF). It has been shown that the electrophysical properties depend on the geometry of the sample, the substrate, and the lattice constant. On CVC of non-stressed sample in the range from −1.2 V to −1 and from 1.2 V to 1.4 V, a region of negative differential resistance (NDR) has been observed. NDR is at both signs of the applied voltage due to the symmetry of the nanostructure. d2I/dV2 is used to determine the nature of the electron-phonon interaction and the features of quasiparticle tunnelling in stressed and non-stressed samples. The results obtained can be useful for calculating new elements of 2D nanoelectronics.

DOI: https://doi.org/10.2478/lpts-2020-0029 | Journal eISSN: 2255-8896 | Journal ISSN: 0868-8257
Language: English
Page range: 3 - 11
Published on: Dec 16, 2020
Published by: Institute of Physical Energetics
In partnership with: Paradigm Publishing Services
Publication frequency: 6 issues per year

© 2020 D. Sergeyev, N. Zhanturina, L. Myasnikova, A.I. Popov, A. Duisenova, A. Istlyaup, published by Institute of Physical Energetics
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.