Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2007-11-21
Phys. Rev. B 77, 115119 (2008)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 5 figures, version for PRB
Scientific paper
10.1103/PhysRevB.77.115119
We propose a fast and versatile algorithm to calculate local and transport properties such as conductance, shot noise, local density of state or local currents in mesoscopic quantum systems. Within the non equilibrium Green function formalism, we generalize the recursive Green function technique to tackle multiterminal devices with arbitrary geometries. We apply our method to analyze two recent experiments: an electronic Mach-Zehnder interferometer in a 2D gas and a Hall bar made of graphene nanoribbons in quantum Hall regime. In the latter case, we find that the Landau edge state pinned to the Dirac point gets diluted upon increasing carrier density.
Kazymyrenko Kyryl
Waintal Xavier
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