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

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

2011-04-26

arxiv.org/abs/1104.4854v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 5 figures. One figure and supplementary movies is available at http://www2.yukawa.kyoto-u.ac.jp/~araki/

Scientific paper

Using molecular dynamics simulations, transport properties of a classical two-dimensional electron system through a narrow constriction in a microchannel are investigated. The simulations reproduces steplike increases of conductance reported in an experiment [Phys. Rev. Lett. 106, 026803 (2011)]. From the visualization of the electric current, it is con?rmed that the conductance at the s-th step corresponds to electron flow in the constriction organized into s non-intersecting lanes. We verify that fluctuations of electrostatic potential play a major role to determine the transition from an insulating state to a conducting state.

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