Steplike electric conduction in a classical two-dimensional electron system through a narrow constriction in a microchannel

Abstract

Using molecular dynamics simulation, we investigate transport properties of a classical two-dimensional electron system confined in a microchannel with a narrow constriction. As a function of the confinement strength of the constriction, the calculated conductance in the simulations exhibits steplike increases as reported in a recent experiment [D. G. Rees et al., Phys. Rev. Lett. 106, 026803 (2011)]. It is confirmed that the number of the steps corresponds to the number of stream lines of electrons through the constriction. We verify that density fluctuation plays a major role in smoothing the steps in the conductance.

11 pages, 9 figures

References in corpus (6)

• Probing multiband superconductivity by point-contact spectroscopy
• Layering and position-dependent diffusive dynamics of confined fluids
• Lane reduction in driven 2d-colloidal systems through microchannels
• Tuning density profiles and mobility of inhomogeneous fluids
• Slow two-level systems in point contacts
• Low-frequency conductivity of a non-degenerate 2D electron liquid in strong magnetic fields

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