The effect of electron-electron interaction induced dephasing on electronic transport in graphene nanoribbons

The effect of dephasing induced by electron-electron interaction on electronic transport in graphene nanoribbons is theoretically investigated. In the presence of disorder in graphene nanoribbons, wavefunction of electrons can set up standing waves along the channel and the conductance exponentially...

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Veröffentlicht in:Applied physics letters 2014-09, Vol.105 (10)
Hauptverfasser: Kahnoj, Sina Soleimani, Touski, Shoeib Babaee, Pourfath, Mahdi
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Touski, Shoeib Babaee
Pourfath, Mahdi
description The effect of dephasing induced by electron-electron interaction on electronic transport in graphene nanoribbons is theoretically investigated. In the presence of disorder in graphene nanoribbons, wavefunction of electrons can set up standing waves along the channel and the conductance exponentially decreases with the ribbon's length. Employing the non-equilibrium Green's function formalism along with an accurate model for describing the dephasing induced by electron-electron interaction, we show that this kind of interaction prevents localization and transport of electrons remains in the diffusive regime where the conductance is inversely proportional to the ribbon's length.
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subjects Applied physics
ELECTRIC CONDUCTIVITY
Electron transport
ELECTRON-ELECTRON INTERACTIONS
Electrons
EQUILIBRIUM
GRAPHENE
GREEN FUNCTION
Green's functions
Nanoribbons
NANOSCIENCE AND NANOTECHNOLOGY
NANOSTRUCTURES
Resistance
STANDING WAVES
WAVE FUNCTIONS
title The effect of electron-electron interaction induced dephasing on electronic transport in graphene nanoribbons
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