The transport properties of poly(G)-poly(C) DNA oligomers in the Harrison's model

Mousavi, Hamze; Bamdad, Mohammad

doi:10.1016/j.jmgm.2022.108138

Cited by 3 publications

(4 citation statements)

References 54 publications

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“…This indicates that the leads are highly conducting and uniform. The retarded Green's function matrix for the device and leads can be written as 49,[55][56][57][58][59]…”

Section: Tb Model and Methodologymentioning

confidence: 99%

“…The self-energies are usually complex numbers and possess the renormalization effect: the real part of self-energy indicates the onsite energy level shift at grid point 1 from ε 1 to ε Σ + Re 1 L , while the imaginary part of self-energy multiplied by −2 expresses the energy level broadening. The reader can refer to 55,59 for calculation method of the self-energies. The broadening or gamma functions, Γ λ , can be obtained as…”

Section: Tb Model and Methodologymentioning

confidence: 99%

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Calculation of Electron Transport in Short Polyyne Nanochains

Mousavi¹,

Bamdad²,

Jalilvand³

2022

ECS J. Solid State Sci. Technol.

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The electron transport properties in short polyyne nanochains lying between two semi-infinite cumulene leads are investigated using tight-binding Hamiltonian of the Harrison's model and the Landauer-Buttiker formalism. The presence of all kinds of atomic orbitals occurring in the monatomic system one by one is studied and proven. The effects of dimerization on the density of states, electron transmission, and current-voltage characteristics of a linear chain of carbon atoms (carbyne) are discussed. Our results show that the polyyne exhibits a semiconducting behavior because of dimerization. In the absence of dimerization, the carbon nanochain behaves as a conductor. Actually, under mechanical strain due to dimerization, a metal-to-semiconductor transition occurs. Moreover, it is found that the band gap in polyyne nanochains is never a constant value, but highly depends on bond length alternation. Thereby, a polyyne nanochain via strain can be exploited as a nanodevice with tunable band gap. The influences of increasing length of the finite polyyne nanochain on the transport properties regarding all atomic orbital types are studied. The nonlinear behavior of the current-voltage curve for different temperatures of the metallic leads is calculated and interpreted. Our theoretical results are in a good overall agreement with the most recent experimental findings.

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“…This indicates that the leads are highly conducting and uniform. The retarded Green's function matrix for the device and leads can be written as 49,[55][56][57][58][59]…”

Section: Tb Model and Methodologymentioning

confidence: 99%

Section: Tb Model and Methodologymentioning

confidence: 99%

Calculation of Electron Transport in Short Polyyne Nanochains

Mousavi¹,

Bamdad²,

Jalilvand³

2022

ECS J. Solid State Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Once the transmission probability has been calculated, it is possible to calculate the voltage-current characteristics in the SL using Landauer's theory, which tells us that employing a connection of the system with two electronic reservoirs, it is possible to obtain the electronic tunneling current through the system, given by [51][52][53],…”

Section: Theoretical Modelmentioning

confidence: 99%

Electronic Transport Properties in GaAs/AlGaAs and InSe/InP Finite Superlattices under the Effect of a Non-Resonant Intense Laser Field and Considering Geometric Modifications

Gil-Corrales

Morales

Yücel

et al. 2022

IJMS

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In this work, a finite periodic superlattice is studied, analyzing the probability of electronic transmission for two types of semiconductor heterostructures, GaAs/AlGaAs and InSe/InP. The changes in the maxima of the quasistationary states for both materials are discussed, making variations in the number of periods of the superlattice and its shape by means of geometric parameters. The effect of a non-resonant intense laser field has been included in the system to analyze the changes in the electronic transport properties by means of the Landauer formalism. It is found that the highest tunneling current is given for the GaAs-based compared to the InSe-based system and that the intense laser field improves the current–voltage characteristics generating higher current peaks, maintaining a negative differential resistance (NDR) effect, both with and without laser field for both materials and this fact allows to tune the magnitude of the current peak with the external field and therefore extend the range of operation for multiple applications. Finally, the power of the system is discussed for different bias voltages as a function of the chemical potential.

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“…Some new parameters attributed to nanoscale including tunneling effect and interphase can also govern the percolation inception. The tunneling tool mainly controls the conductivity of nanocomposites (abbreviated as conductivity here), since the electrons can be easily transported over small tunnels between neighboring particles 25 – 28 . In fact, the conductivity does not need the physical joining of nanoparticles and so, the tunneling effect changes the percolation inception in nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Predicting of tunneling resistivity between adjacent nanosheets in graphene–polymer systems

Zare,

Gharib,

Nam

et al. 2023

Sci Rep

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In this work, the tunneling resistivity between neighboring nanosheets in grapheme–polymer nanocomposites is expressed by a simple equation as a function of the characteristics of graphene and tunnels. This expression is obtained by connecting two advanced models for the conductivity of graphene-filled materials reflecting tunneling role and interphase area. The predictions of the applied models are linked to the tested data of several samples. The impressions of all factors on the tunneling resistivity are evaluated and interpreted using the suggested equation. The calculations of tunneling resistivity for the studied examples by the model and suggested equation demonstrate the same levels, which confirm the presented methodology. The results indicate that the tunneling resistivity decreases by super-conductive graphene, small tunneling width, numerous contacts among nanosheets and short tunneling length.

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The transport properties of poly(G)-poly(C) DNA oligomers in the Harrison's model

Cited by 3 publications

References 54 publications

Calculation of Electron Transport in Short Polyyne Nanochains

Calculation of Electron Transport in Short Polyyne Nanochains

Electronic Transport Properties in GaAs/AlGaAs and InSe/InP Finite Superlattices under the Effect of a Non-Resonant Intense Laser Field and Considering Geometric Modifications

Predicting of tunneling resistivity between adjacent nanosheets in graphene–polymer systems

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