Theory of nonlinear transport in narrow ballistic constrictions
- 15 February 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 41 (6), 3874-3877
- https://doi.org/10.1103/physrevb.41.3874
Abstract
We present quantum-mechanical model calculations of nonlinear transport in narrow ballistic constrictions. We calculate the current and differential conductance g as functions of the applied voltage and the electron Fermi energy . Nonlinear effects in g smooth out transmission resonances and shift and degrade the quantized ballistic conductance plateaus. Contrary to previous claims, we find that g does not develop additional plateaus between those quantized at 2/h. At high the current saturates at values strongly dependent on . .AE
Keywords
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