Coherent Transport Through a Quadruple Point in a Few Electron Triple Dot

Details Coherent Transport Through a Quadruple Point in a Few Electron Triple Dot Coherent Transport Through a Quadruple Point in a Few Electron Triple Dot

2006-11-18

arxiv.org/abs/cond-mat/0611488v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

To be published in ICPS Conf. Proceedings 2006

Scientific paper

10.1063/1.2730161

A few electron double electrostatic lateral quantum dot can be transformed into a few electron triple quantum dot by applying a different combination of gate voltages. Quadruple points have been achieved at which all three dots are simultaneously on resonance. At these special points in the stability diagram four occupation configurations are possible. Both charge detection and transport experiments have been performed on this device. In this short paper we present data and confirm that transport is coherent by observing a Pi phase shift in magneto-conductance oscillations as one passes through the quadruple point.

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