Title: Nonequilibrium electron transport in two-dimensional nanostructures modeled using Greens functions and the finite-element method
نویسندگان
چکیده
Rights: © 2004 American Physical Society (APS). This is the accepted version of the following article: Havu, P. & Havu, V. & Puska, M. J. & Nieminen, R. M. 2004. Nonequilibrium electron transport in two-dimensional nanostructures modeled using Greens functions and the finite-element method. Physical Review B. Volume 69, Issue 11. 115325/1-13. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.69.115325, which has been published in final form at http://journals.aps.org/prb/abstract/10.1103/PhysRevB.69.115325.
منابع مشابه
Electronic Transmission Wave Function of Disordered Graphene by Direct Method and Green's Function Method
We describe how to obtain electronic transport properties of disordered graphene, including the tight binding model and nearest neighbor hopping. We present a new method for computing, electronic transport wave function and Greens function of the disordered Graphene. In this method, based on the small rectangular approximation, break up the potential barriers in to small parts. Then using the f...
متن کاملTime-Discontinuous Finite Element Analysis of Two-Dimensional Elastodynamic Problems using Complex Fourier Shape Functions
This paper reformulates a time-discontinuous finite element method (TD-FEM) based on a new class of shape functions, called complex Fourier hereafter, for solving two-dimensional elastodynamic problems. These shape functions, which are derived from their corresponding radial basis functions, have some advantages such as the satisfaction of exponential and trigonometric function fields in comple...
متن کاملAn Enhanced Finite Element method for Two Dimensional Linear Viscoelasticity using Complex Fourier Elements
In this paper, the finite element analysis of two-dimensional linear viscoelastic problems is performed using quadrilateral complex Fourier elements and, the results are compared with those obtained by quadrilateral classic Lagrange elements. Complex Fourier shape functions contain a shape parameter which is a constant unknown parameter adopted to enhance approximation’s accuracy. Since the iso...
متن کاملAIP Finite-element implementation for electron transport in nanostructures
We have modeled transport properties of nanostructures using the Green’s function method within the framework of the density-functional theory. The scheme is computationally demanding so that numerical methods have to be chosen carefully. A typical solution to the numerical burden is to use a special basis-function set, which is tailored to the problem in question, for example, the atomic orbit...
متن کاملFinite-element implementation for electron transport in nanostructures.
We have modeled transport properties of nanostructures using Green's-function method within the framework of the density-functional theory. The scheme is computationally demanding, so numerical methods have to be chosen carefully. A typical solution to the numerical burden is to use a special basis-function set, which is tailored to the problem in question, for example, the atomic-orbital basis...
متن کامل