Quantum dots formed in a GaAs/AlGaAs quantum ring

Muehle, A. and Wegscheider, W. and Haug, R. J. (2008) Quantum dots formed in a GaAs/AlGaAs quantum ring. APPLIED PHYSICS LETTERS, 92 (1): 013126. ISSN 0003-6951,

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Abstract

We demonstrate the tunability of a GaAs/AlGaAs quantum ring showing coherent Aharonov-Bohm oscillations up to a gate voltage regime where the ring splits into three quantum dots. This is explained based on the structure's special confinement potential. We characterized the dots by analyzing the corresponding sets of Coulomb blockade lines. Additionally, the spatial configuration of the dots was confirmed by charge measurements using an adjacent quantum point contact. (c) 2008 American Institute of Physics.

Item Type: Article
Uncontrolled Keywords: COULOMB-BLOCKADE;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Depositing User: Dr. Gernot Deinzer
Date Deposited: 10 Nov 2020 13:55
Last Modified: 10 Nov 2020 13:55
URI: https://pred.uni-regensburg.de/id/eprint/31514

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