Quick search Find article
Quick search
Find article

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

R. Leturcq1, D. Graf1, T. Ihn1, K. Ensslin1, D. D. Driscoll2 and A. C. Gossard2

Show affiliations


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 are essential for building functional quantum electronic systems.


PACS

73.63.Kv Quantum dots

73.23.Hk Coulomb blockade; single-electron tunneling

Subjects

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Dates

Issue 3 (August 2004)

Received 10 May 2004, accepted for publication 28 May 2004



View by subject




Export








Please login to access our web services, or create an account if you don't yet have one.

You must have cookies enabled in your web browser to be able to login.

Username
Password

Forgotten your password? Get a new one here.