Electronic transport in graphene-based structures: An effective cross-section approach
Publication: Research - peer-review › Journal article – Annual report year: 2012
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Electronic transport in graphene-based structures: An effective cross-section approach. / Uppstu, Andreas; Saloriutta, Karri; Harju, Ari; Puska, Martti; Jauho, Antti-Pekka.
In: PHYSICAL REVIEW B, Vol. 85, No. 4, 2012, p. -.Publication: Research - peer-review › Journal article – Annual report year: 2012
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TY - JOUR
T1 - Electronic transport in graphene-based structures: An effective cross-section approach
A1 - Uppstu,Andreas
A1 - Saloriutta,Karri
A1 - Harju,Ari
A1 - Puska,Martti
A1 - Jauho,Antti-Pekka
AU - Uppstu,Andreas
AU - Saloriutta,Karri
AU - Harju,Ari
AU - Puska,Martti
AU - Jauho,Antti-Pekka
PY - 2012
Y1 - 2012
N2 - We show that transport in low-dimensional carbon structures with finite concentrations of scatterers can be modeled by utilizing scaling theory and effective cross sections. Our results are based on large-scale numerical simulations of carbon nanotubes and graphene nanoribbons, using a tight-binding model with parameters obtained from first-principles electronic structure calculations. As shown by a comprehensive statistical analysis, the scattering cross sections can be used to estimate the conductance of a quasi-one-dimensional system both in the Ohmic and localized regimes. They can be computed with good accuracy from the transmission functions of single defects, greatly reducing the computational cost and paving the way toward using first-principles methods to evaluate the conductance of mesoscopic systems, consisting of millions of atoms.
AB - We show that transport in low-dimensional carbon structures with finite concentrations of scatterers can be modeled by utilizing scaling theory and effective cross sections. Our results are based on large-scale numerical simulations of carbon nanotubes and graphene nanoribbons, using a tight-binding model with parameters obtained from first-principles electronic structure calculations. As shown by a comprehensive statistical analysis, the scattering cross sections can be used to estimate the conductance of a quasi-one-dimensional system both in the Ohmic and localized regimes. They can be computed with good accuracy from the transmission functions of single defects, greatly reducing the computational cost and paving the way toward using first-principles methods to evaluate the conductance of mesoscopic systems, consisting of millions of atoms.
U2 - 10.1103/PhysRevB.85.041401
DO - 10.1103/PhysRevB.85.041401
JO - PHYSICAL REVIEW B
JF - PHYSICAL REVIEW B
SN - 10980121
IS - 4
VL - 85
SP - -
ER -