Volume 67, Number 3, August 2004
|Page(s)||439 - 445|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 July 2004|
Multi-terminal transport through a quantum dot in the Coulomb-blockade regime
Solid State Physics Laboratory, ETH Zürich - 8093 Zürich, Switzerland
2 Materials Department, University of California - Santa Barbara, CA 93106, USA
Corresponding author: email@example.com
Accepted: 28 May 2004
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: 73.23.Hk – Coulomb blockade; single-electron tunneling / 73.63.Kv – Quantum dots
© EDP Sciences, 2004
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