Abstract
We report a detailed theoretical study on electron transport through a quantum wire connected to the source and drain by flanges. Our results show that the connection flange angle affects significantly the electron transmission through the wire. Resonant reflection and trapping are observed in our calculations. The optimal flange angle that allows maximum transmission corresponds to this resonance condition, which is around $18\ifmmode^\circ\else\textdegree\fi{}$ and is essentially independent of the width or length of the wire. This angle changes by a few degrees when the initial energy, the energy spread of the wave packet, or the length of the flange changes. Such a finding can be used to assist the design of high-conductance quantum wires.
Published Version
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