<abstract xmlns="http://www.w3.org/1999/xhtml">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. <italic>d2I/dV2</italic> 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.</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.

Computer Simulation of the Electric Transport Properties of the FeSe Monolayer

Latvian Journal of Physics and Technical Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Computer Simulation of the Electric Transport Properties of the FeSe Monolayer"}

The paper deals with the model research of electric transport characteristics of stressed and non-stressed FeSe monolayers. Transmission spectra,...

Computer Simulation of the Electric Transport Properties of the FeSe Monolayer

Published Online: Dec 16, 2020

Page range: 3 - 11

DOI: https://doi.org/10.2478/lpts-2020-0029

Keywords
Current-voltage characteristics, FeSe monolayer, transmission spectra, 2D-nanoelectronics

© 2020 D. Sergeyev et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Computer Simulation of the Electric Transport Properties of the FeSe Monolayer

Published Online: Dec 16, 2020

Page range: 3 - 11

DOI: https://doi.org/10.2478/lpts-2020-0029

KeywordsCurrent-voltage characteristics, FeSe monolayer, transmission spectra, 2D-nanoelectronics

© 2020 D. Sergeyev et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Current-voltage characteristics, FeSe monolayer, transmission spectra, 2D-nanoelectronics