= B. J. van Wees
{c}
{tag=Physicist}
An experimental <physicist> who coauthored the 1988 observation of quantized <electrical conductance> in <quantum point contacts>. A gate narrowed a constriction in a <two-dimensional electron gas>. The conductance changed in steps as transverse conducting modes became available, making a controllable semiconductor device a direct demonstration that a narrow channel carries current through discrete quantum modes.<Quantized conductance of point contacts by B. J. van Wees and others>[Abstract: gate-controlled width, conductance steps and quantized transverse momentum]{ref}
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