R. Leturcq et al 2004 Europhys. Lett. 67 439 doi:10.1209/epl/i2004-10084-x
R. Leturcq1, D. Graf1, T. Ihn1, K. Ensslin1, D. D. Driscoll2 and A. C. Gossard2
Show affiliationsThree-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 are essential for building functional quantum electronic systems.
Issue 3 (August 2004)
Received 10 May 2004, accepted for publication 28 May 2004
R. Leturcq et al 2004 Europhys. Lett. 67 439
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