A state with negative binding energy induced by coherent transport in a quantum wire

Abstract

In a two-dimensional quantum wire in a perpendicular magnetic field with a smooth embedded repulsive scattering potential we find in the multimode conductance resonances caused by bound states with negative binding energy. These resonances are the counterexamples to well known dips in the conductance and evanescent states caused by quasi-bound states of attractive scattering centers in the wire.

RevTeX, 4 pages with included 4 postscript figures, high resolution version is available at http://hartree.raunvis.hi.is/~vidar/Rann/VGCSTAM_05.pdf

References in corpus (2)

• Transport through a quantum ring, a dot and a barrier embedded in a nanowire in magnetic field
• Resonant scattering on impurities in the Quantum Hall Effect

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