| Issue |
Europhys. Lett.
Volume 67, Number 3, August 2004
|
|
|---|---|---|
| Page(s) | 439 - 445 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10084-x | |
| Published online | 01 July 2004 | |
Multi-terminal transport through a quantum dot in the Coulomb-blockade regime
1
Solid State Physics Laboratory, ETH Zürich - 8093 Zürich, Switzerland
2
Materials Department, University of California - Santa Barbara, CA 93106, USA
Corresponding author: leturcq@phys.ethz.ch
Received:
10
May
2004
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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