Disordered T-shaped graphene nanodevice (TGN) was designed and studied in this paper. We demonstrated the intrinsic transport properties of the TGN by using Landauer approach. Knowing the transmission probability of an electron the current through the system is obtained using Landauer-Buttiker formalism. The effects of single disorder on conductance, current and on the transport length scales a...

Hybrid structures based on graphene and carbon nanotubes (CNTs) are one of the most relevant modern nanomaterials for applications in various fields, including electronics. The variety topological architectures graphene/CNT hybrids requires a preliminary study their physical properties by silico methods. This paper is devoted to electronic electrical hybrid 2D with an island topology using self...

Recently, the intrinsic magnetic topological insulator MnBi2Te4 has attracted enormous research interest due to great success in realizing exotic quantum states, such as anomalous Hall effect (QAHE), axion state, high-Chern-number and high-temperature Chern states. One key issue this field is effectively manipulate these states control phase transitions. Here, by systematic angle-dependent tran...

When creating a model of composite medium based on carbon nanotubes in the gigahertz and subterahertz ranges, it is necessary to take into account tunnel coupling between nanoparticles. To simplify consideration, we present consisting same randomly oriented linear chains parallel single walled metallic connected by contacts. The problem scattering electromagnetic radiation was solved through ap...

We study the transport properties of multiterminal graphene nanodevices using the Landauer-Buttiker approach and the tight binding model. We consider a four-terminal device made at the crossing of a zigzag and armchair nanoribbons and two types of T-junction devices. The transport properties of graphene multiterminal devices are highly sensitive to the details of the junction region. Thus the p...

in this study, polyaniline molecule (emeraldine base) is modeled as a molecular wire and the effects of the metal/molecule coupling strength and the molecule length on the current-voltage (i-v) characteristics are numerically investigated. using a tight-binding hamiltonian model, the methods based on non-equilibrium green’s function theory, landauer formalism and newns-anderson model, our calcu...

A robust, user-friendly, and automated method to determine quantum conductance in quasi-one-dimensional systems is presented. The scheme relies upon an initial density-functional theory calculation in a specific geometry after which the ground-state eigenfunctions are transformed to a maximally-localised Wannier function (MLWF) basis. In this basis, our novel algorithms manipulate and partition...