Stochastic Coulomb blockade and scaling of charging energy in a double quantum dot system
We have studied the transport properties of a device consisting of two quantum dots, defined electrostatically in a (Al.Ga)As heterostructure. In the series conductance of the two dots, we observe irregularly spaced conductance peaks of fluctuating amplitude. This behaviour results from transport in...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
7 July 2009
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| In: |
Superlattices and microstructures
Year: 1994, Jahrgang: 16, Heft: 3, Pages: 275-278 |
| ISSN: | 1096-3677 |
| DOI: | 10.1016/S0749-6036(09)80014-1 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1016/S0749-6036(09)80014-1 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0749603609800141 |
| Verfasserangaben: | L.W. Molenkamp and M. Kemerink |
MARC
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| 520 | |a We have studied the transport properties of a device consisting of two quantum dots, defined electrostatically in a (Al.Ga)As heterostructure. In the series conductance of the two dots, we observe irregularly spaced conductance peaks of fluctuating amplitude. This behaviour results from transport in the stochastic Coulomb blockade regime. In a second experiment, we measure the charging energy of one dot through the effect of its potential (which varies in a saw-tooth fashion with gate voltage) on the conductance of the other dot. We find that the charging energy scales quadrat-ically with the reflection probability of the tunnel barriers, in agreement with a recent theory. | ||
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