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Tuning of coupling modes in laterally parallel double open quantum dots

Chi-Shung Tang, Wing Wa Yu, Vidar Gudmundsson

cond-mat.mes-hallarXiv:cond-mat/0507721

Abstract

We consider electronic transport through laterally parallel double open quantum dots embedded in a quantum wire in a perpendicular magnetic field. The coupling modes of the dots are tunable by adjusting the strength of a central barrier and the applied magnetic field. Probability density and electron current density are calculated to demonstrate transport effects including magnetic blocking, magnetic turbulence, and a hole-like quasibound state feature. Fano to dip line-shape crossover in the conductance is found by varying the magnetic field.

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