Oscillatory persistent currents in self-assembled quantum rings
We report the direct measurement of the persistent current carried by a single electron by means of magnetization experiments on self-assembled InAs/GaAs quantum rings. We measured the first Aharonov-Bohm oscillation at a field of 14 T, in perfect agreement with our model based on the structural pro...
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| Veröffentlicht in: | Physical review letters 2007-10, Vol.99 (14), p.146808-146808, Article 146808 |
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| container_title | Physical review letters |
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| creator | Kleemans, N A J M Bominaar-Silkens, I M A Fomin, V M Gladilin, V N Granados, D Taboada, A G García, J M Offermans, P Zeitler, U Christianen, P C M Maan, J C Devreese, J T Koenraad, P M |
| description | We report the direct measurement of the persistent current carried by a single electron by means of magnetization experiments on self-assembled InAs/GaAs quantum rings. We measured the first Aharonov-Bohm oscillation at a field of 14 T, in perfect agreement with our model based on the structural properties determined by cross-sectional scanning tunneling microscopy measurements. The observed oscillation magnitude of the magnetic moment per electron is remarkably large for the topology of our nanostructures, which are singly connected and exhibit a pronounced shape asymmetry. |
| doi_str_mv | 10.1103/physrevlett.99.146808 |
| format | Article |
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| title | Oscillatory persistent currents in self-assembled quantum rings |
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