Magnetoconductance of a few-electron open quantum dot

Magnetoconductance of a small open lateral dot is studied both theoretically and experimentally for the conditions when the dot contains down to ∼15 electrons. We confirm the existence of a new regime for open dots in which the transport through the structure occurs through individual eigenstates of...

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Bibliographic Details
Published in:Physica. E, Low-dimensional systems & nanostructures Low-dimensional systems & nanostructures, 2000, Vol.6 (1), p.409-413
Main Authors: Zozoulenko, I.V., Sachrajda, A.S., Gould, C., Berggren, K.-F., Zawadzki, P., Feng, Y., Wasilewski, Z.
Format: Article
Language:English
Subjects:
Electron billiards
Magnetoconductance
Quantum dots
TECHNOLOGY
TEKNIKVETENSKAP
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Summary:Magnetoconductance of a small open lateral dot is studied both theoretically and experimentally for the conditions when the dot contains down to ∼15 electrons. We confirm the existence of a new regime for open dots in which the transport through the structure occurs through individual eigenstates of the corresponding closed dot. In particular, at low magnetic fields the characteristic features in the conductance are related to the underlying eigenspectrum shells. When the number of modes in the leads is reduced more detailed structures within the shells due to single eigenlevels becomes discernible. At higher fields Landau level condensation is evident as well as the crossing of levels collapsing to the different Landau levels.
ISSN:1386-9477
1873-1759
1873-1759
DOI:10.1016/S1386-9477(99)00205-2