Roggendorf, M. C. and Harke, B. and Fricke, C. and Hohls, F. and Reinwald, M. and Wegscheider, Werner and Haug, R. J. (2005) Coupling symmetry of quantum dot states. PHYSICAL REVIEW B, 72 (23): 233402. ISSN 1098-0121,
Full text not available from this repository. (Request a copy)Abstract
With noninvasive methods, we investigate ground and excited states of a lateral quantum dot. Charge detection via a quantum point contact is used to map the dot dynamics in a regime where the current through the dot is too low for transport measurements. In this way we investigate and compare the tunneling rates from the dot to source and drain. We find a symmetry line on which the tunneling rates to both leads are equal. In this situation ground states as well as excited states influence the mean charge of the dot. A detailed study in this regime reveals that the coupling symmetry depends on the number of states contributing to transport and on the spatial distribution of individual states.
| 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: | 23 Apr 2021 04:36 |
| Last Modified: | 23 Apr 2021 04:36 |
| URI: | https://pred.uni-regensburg.de/id/eprint/35391 |
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