Physics – Condensed Matter – Materials Science
Scientific paper
2010-08-06
Physics
Condensed Matter
Materials Science
10 pages, 10 figures, Accepted for publication in Phys. Rev. B, 2011
Scientific paper
In this work, high field carrier transport in two dimensional (2D) graphene is investigated. Analytical models are applied to estimate the saturation currents in graphene, based on the high scattering rate of optical phonon emission. Non-equilibrium (hot) phonon effect was studied by Monte Carlo (MC) simulations. MC simulation confirms that hot phonon effects play a dominant role in current saturation in graphene. Current degradation due to elastic scattering events is much smaller compared to the hot phonon effect. Transient phenomenon as such as velocity overshoot was also studied using MC simulation. The simulation results shows promising potential for graphene to be used in high speed electronic devices by shrinking the channel length below 100nm if electrostatic control can be exercised in the absence of a band gap.
Fang Tian
Jena Debdeep
Konar Aniruddha
Xing Huili
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