Multi-terminal transport through a quantum dot in the Coulomb blockade regime

Details Multi-terminal transport through a quantum dot in the Coulomb blockade regime Multi-terminal transport through a quantum dot in the Coulomb blockade regime

2004-06-02

arxiv.org/abs/cond-mat/0406046v1

Europhys. Lett. 67 (2004) 439-445

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 4 figures

Scientific paper

10.1209/epl/i2004-10084-x

Three terminal tunnelling experiments on quantum dots in the Coulomb blockade regime allow a quantitative determination of the coupling strength of individual quantum states to the leads. Exploiting this insight we have observed independent fluctuations of the coupling strengths as a function of electron number and magnetic field due to changes in the shape of the wave function in the dot. Such a detailed understanding and control of the dot-lead coupling can be extended to more complex systems such as coupled dots, and is essential for building functional quantum electronic systems.

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