Low-dimensional phonon transport effects in ultranarrow disordered graphene nanoribbons

نویسندگان

  • Hossein Karamitaheri
  • Mahdi Pourfath
  • Hans Kosina
  • Neophytos Neophytou
چکیده

Hossein Karamitaheri,1 Mahdi Pourfath,2,3 Hans Kosina,3 and Neophytos Neophytou4,* 1Department of Electrical Engineering, University of Kashan, Kashan 87317-51167, Iran 2School of Electrical and Computer Engineering, University of Tehran, Tehran 14395-515, Iran 3Institute for Microelectronics, Technical University of Vienna, Vienna, 1040, Austria 4School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom (Received 28 November 2014; revised manuscript received 20 February 2015; published 13 April 2015)

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

Enhanced Thermoelectric Figure of Merit in Edge Disordered Zigzag Graphene Nanoribbons

We investigate electron and phonon transport through edge disordered zigzag graphene nanoribbons based on the same methodological tool of nonequilibrium Green functions. We show that edge disorder dramatically reduces phonon thermal transport while being only weakly detrimental to electronic conduction. The behavior of the electronic and phononic elastic mean free paths points to the possibilit...

متن کامل

Parity conservation in electron-phonon scattering in zigzag graphene nanoribbon

Articles you may be interested in Quantum conductance of zigzag graphene oxide nanoribbons Chiral graphene nanoribbons: Objective molecular dynamics simulations and phase-transition modeling Phonon limited transport in graphene nanoribbon field effect transistors using full three dimensional quantum mechanical simulation

متن کامل

Transport length scales in disordered graphene-based materials: strong localization regimes and dimensionality effects.

We report on a numerical study of quantum transport in disordered two dimensional graphene and graphene nanoribbons. By using the Kubo and the Landauer approaches, transport length scales in the diffusive (mean free path and charge mobilities) and localized regimes (localization lengths) are computed, assuming a short range disorder (Anderson-type). The electronic systems are found to undergo a...

متن کامل

Phonon Transport in Large Scale Carbon-Based Disordered Materials: Implementation of an Efficient Order-N and Real Space Kubo Methodology

We have developed an efficient order-N real space Kubo approach for the calculation of the phonon conductivity which outperforms state-of-the-art alternative implementations based on the Green’s function formalism. The method treats efficiently the time-dependent propagation of phonon wave packets in real space, and this dynamics is related to the calculation of the thermal conductance. Without...

متن کامل

Mobility in semiconducting graphene nanoribbons: Phonon, impurity, and edge roughness scattering

The transport properties of carriers in semiconducting graphene nanoribbons are studied by comparing the effects of phonon, impurity, and line-edge roughness scattering. It is found that scattering from impurities located at the surface of nanoribbons and from acoustic phonons are as important as line-edge roughness scattering. The relative importance of these scattering mechanisms varies with ...

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:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015