Diameter-dependent conductance of InAs nanowires
作者： Erik P. A. M. Bakkers , Leo P. Kouwenhoven , Magnus T. Borgström , Marc Scheffler , Stevan Nadj-Perge
DOI: 10.1063/1.3270259
关键词: Effective nuclear charge 、 Electron mobility 、 Electrical resistance and conductance 、 Quantum wire 、 Conductance 、 Electrical resistivity and conductivity 、 Nanowire 、 Condensed matter physics 、 Materials science 、 Conductivity
摘要: Electrical conductance through InAs nanowires is relevant for electronic applications as well fundamental quantum experiments. Here, we employ nominally undoped, slightly tapered to study the diameter dependence of their conductance. By contacting multiple sections each wire, can within individual wires without need compare different nanowire batches. At room temperature, find a diameter-independent conductivity diameters larger than 40 nm, indicative three-dimensional diffusive transport. For smaller diameters, resistance increases considerably, in coincidence with strong suppression mobility. From an analysis effective charge carrier density, indications surface accumulation layer.
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