Coherently aligned, multiatomic step arrays on GaAs(331) substrates generate a periodic array of conductive quantum wires in a two-dimensional (2D) electron gas. A small number of wires is selected by superimposing a constriction with independent side-gate control. By tuning the gate-voltage window, wires can be selected one by one. The resulting oscillatory current transmission provides a new functionality by switching between spatially separated electron channels. The wires are coupled by a small number of 2D electrons resulting in orders of magnitude reduced conductance perpendicular to the step edges.
No takes yet. Share an insight, caveat, or question.
Friedland et al. (1999) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: