= M. Büttiker
{c}
{tag=Physicist}
A theoretical <condensed matter physicist> who modeled quantized <electrical conductance> through a narrow constriction as transmission through a saddle-shaped potential. Opening successive transverse modes produces conductance steps, while the saddle's curvatures control how sharply transmission rises. This gives a concrete microscopic model of a <quantum point contact> and explains why the shape of its bottleneck matters.<Quantized transmission of a saddle-point constriction by M. Büttiker>[Abstract: split-gate saddle potential, conductance steps and quantization accuracy]{ref}
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