Abstract
Quantum transport in carbon allotropes emerging from graphene/graphite nanolayers is described. Nonequilibrium Arora’s distribution function (NEADF) includes the energy gained/lost in a mean free path (mfp) in the presence of an electric field. It is shown to organize the randomness in equilibrium to streamlined motion in extreme nonequilibrium leading to saturation of drift velocity and the current. A simple tanh form is obtained that is strictly valid for nondegenerate statistics, but is extended to degenerate statistics by defining a degeneracy temperature. Ballistic transport where device length is smaller than the scattering-limited mfp is shown to degrade the mobility. Resistance quantum is obtained in 1D configuration that is generalized to give contact resistance and channel resistance. Magnetotransport in graphene is discussed to demonstrate the utilization of magnetic field in characterization and performance evaluation.
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Arora, V.K. (2017). Carbon: The Soul of Future Nanoelectronics. In: Jain, V., Rattan, S., Verma, A. (eds) Recent Trends in Materials and Devices. Springer Proceedings in Physics, vol 178. Springer, Cham. https://doi.org/10.1007/978-3-319-29096-6_2
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DOI: https://doi.org/10.1007/978-3-319-29096-6_2
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