Coulomb Charging Effects in an Open Quantum Dot

Details Coulomb Charging Effects in an Open Quantum Dot Coulomb Charging Effects in an Open Quantum Dot

2000-03-02

arxiv.org/abs/cond-mat/0003021v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, RevTeX, 15 eps figures included, submitted to Phys. Rev. B

Scientific paper

10.1088/0953-8984/13/42/312

Low-temperature transport properties of a lateral quantum dot formed by overlaying finger gates in a clean one-dimensional channel are investigated. Continuous and periodic oscillations superimposed upon ballistic conductance steps are observed, when the conductance G of the dot changes within a wide range 02e^2/h may be due to suppression of inter-1D-subband scattering. Fully transmitted subbands contribute to coherent background of conductance, while sequential tunneling via weakly transmitted subbands leads to Coulomb charging of the dot.

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