Details

Autor(en) / Beteiligte

• Libisch, F
• Rotter, S
• Burgdörfer, J

Titel

Coherent transport through graphene nanoribbons in the presence of edge disorder

Ist Teil von

• New journal of physics, 2012-12, Vol.14 (12), p.123006

Ort / Verlag

IOP Publishing

Erscheinungsjahr

2012

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We simulate electron transport through graphene nanoribbons of experimentally realizable size (length L up to 2 μm and width W 40 nm) in the presence of scattering at rough edges. Our numerical approach is based on a modular recursive Green's function technique that features sub-linear scaling of the computational effort with L. We investigate backscattering at edge defects: Fourier spectroscopy of individual scattering states allows us to disentangle inter-valley and intra-valley scattering. We observe Anderson localization with a well-defined exponential decay over ten orders of magnitude in amplitude. We determine the corresponding localization length for different strengths and shapes of edge roughness.