Universal Landauer conductance in chiral symmetric 2d systems

We study transport properties of an arbitrarily shaped ultraclean graphene sheet, adiabatically connected to leads,composed by the same material. If the localized interactions do not destroy chiral symmetry, we show that the conductance is quantized, since it is dominated by the quasi one-dimensiona...

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Published in:arXiv.org 2007-12
Main Authors: Barci, Daniel G, Oxman, Luis E
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Language:English
Subjects:
Deformation
Graphene
Resistance
Symmetry
Transport properties
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Oxman, Luis E
description We study transport properties of an arbitrarily shaped ultraclean graphene sheet, adiabatically connected to leads,composed by the same material. If the localized interactions do not destroy chiral symmetry, we show that the conductance is quantized, since it is dominated by the quasi one-dimensional leads. As an example, we show that smooth structural deformations of the graphene plane do not modify the conductance quantization.
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subjects Deformation
Graphene
Resistance
Symmetry
Transport properties
title Universal Landauer conductance in chiral symmetric 2d systems
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