Muehle, A. and Wegscheider, W. and Haug, R. J. (2007) Coupling in concentric double quantum rings. APPLIED PHYSICS LETTERS, 91 (13): 133116. ISSN 0003-6951,
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We designed a device consisting of two concentric quantum rings in a GaAs/AlGaAs heterostructure. The outer ring is connected to leads while the inner ring is only capacitively coupled to the rest of the system. Measuring electronic transport in a regime with strong coupling to the leads we found that the conductivity not only shows an Aharonov-Bohm effect with a periodicity fitting to the diameter of the outer ring but also another component matching the inner ring. This can be explained by magnetic-field dependent charge redistributions in the inner ring which affect the outer ring via Coulomb interaction. (C) 2007 American Institute of Physics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MESOSCOPIC RINGS; POTENTIALS; |
| 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: | 01 Dec 2020 11:26 |
| Last Modified: | 01 Dec 2020 11:26 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32196 |
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