Monte Carlo Simulation of Charge Transport in Graphene (Simulazione Monte Carlo per il trasporto di cariche nel grafene)

نویسنده

  • Giovanni Nastasi
چکیده

Simulations of charge transport in graphene are presented by implementing a recent method published on the paper: V. Romano, A. Majorana, M. Coco,"DSMC method consistent with the Pauli exclusion principle and comparison with deterministic solutions for charge transport in graphene", Journal of Computational Physics 302 (2015) 267-284. After an overview of the most important aspects of the semiclassical transport model for the dynamics of electrons in monolayer graphene, it is made a comparison in computational time between MATLAB and Fortran implementations of the algorithms. Therefore it is studied the case of graphene on substrates which it is produced original results by introducing models for the distribution of distances between graphene's atoms and impurities. Finally simulations, by choosing different kind of substrates, are done. ----- Le simulazioni per il trasporto di cariche nel grafene sono presentate implementando un recente metodo pubblicato nell'articolo: V. Romano, A. Majorana, M. Coco,"DSMC method consistent with the Pauli exclusion principle and comparison with deterministic solutions for charge transport in graphene", Journal of Computational Physics 302 (2015) 267-284. Dopo una panoramica sugli aspetti pi\`u importanti del modello di trasporto semiclassico per la dinamica degli elettroni nel grafene sospeso, \`e stato effettuato un confronto del tempo computazionale tra le implementazioni MATLAB e Fortran dell'algoritmo. Inoltre \`e stato anche studiato il caso del grafene su substrato su cui sono stati prodotti dei risultati originali considerando dei modelli per la distribuzione delle distanze tra gli atomi del grafene e le impurezze. Infine sono state effettuate delle simulazioni scegliendo substrati di diversa natura.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Charge transport and mobility in monolayer graphene

*Correspondence: [email protected] 1Dipartimento di Matematica e Informatica, Università di Catania, Viale A. Doria 6, Catania, 95125, Italy Full list of author information is available at the end of the article Abstract For electron devices that make use of innovative materials, a basic step in the development of models and simulation computer aided design (CAD) tools is the determination of...

متن کامل

Parallel Monte Carlo simulation of Lebwohl-Lasher systems

I sistemi Lebwohl-Lasher sono stati studiati approfonditamente in passato come modello molto semplificato di cristalli liquidi. Nonostante la semplicità, il modello riproduce molto bene l'ordine orientazionale dei cristalli liquidi nematici reali e molte proprietá della transizione di fase isotropo-nematico, incluso il suo carattere del primo ordine “debole”. Con il calcolo ad alte prestazione ...

متن کامل

Deterministic and stochastic solutions of the Boltzmann equation for charge transport in graphene on substrates

A physically accurate model for charge transport in graphene is given by a semiclassical Boltzmann equation whose scattering terms have been deeply analyzed in the last decade. Due to the computational difficulties, the most part of the available solutions have been obtained with direct Monte Carlo simulations. The aim of this work is to simulate a monolayer graphene on a substrate, as, for ins...

متن کامل

Comparison of MCNP4C, 4B and 4A Monte Carlo codes when calculating electron therapy depth doses

ABSTRACT Background: accurate methods of radiation therapy dose calculation. There are different Monte Carlo codesfor simulation of photons, electrons and the coupled transport of electrons and photons. MCNPis a general purpose Monte Carlo code that can be used for electron, photon and coupledphoton-electron transport.Monte Carlo simulation of radiation transport is considered to be one of the ...

متن کامل

Monte Carlo Simulation of Radiation effects in protection layers of logical cell of the digital gate in ‎the FPGA for electron and proton rays Using the FLUKA Code

In this paper, radiation effects in protection layers of logical cell of the digital gate in the FPGA for electron and proton rays was simulated Using the FLUKA Code. by using of the Monte Carlo simulation, the electron and proton transport into the logical cell of the digital gate in the FPGA will be studied. In this simulation, the maximum energy of the electrons and protons at the entrance o...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • CoRR

دوره abs/1707.05707  شماره 

صفحات  -

تاریخ انتشار 2017