Fuhrer, A. and Ihn, T. and Ensslin, K. and Wegscheider, Werner and Bichler, M. (2003) Singlet-triplet transition tuned by asymmetric gate voltages in a quantum ring. PHYSICAL REVIEW LETTERS, 91 (20): 206802. ISSN 0031-9007, 1079-7114
Full text not available from this repository.Abstract
Wave-function and interaction effects in the addition spectrum of a Coulomb-blockaded many-electron quantum ring are investigated as a function of asymmetrically applied gate voltages and magnetic field. Hartree and exchange contributions to the interaction are quantitatively evaluated at a crossing between states extended around the ring and states which are more localized in one arm of the ring. A gate tunable singlet-triplet transition of the two uppermost levels of this many-electron ring is identified at zero magnetic field.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DOTS; SPECTRUM; COULOMB; |
| 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: | 27 Jul 2021 11:13 |
| Last Modified: | 27 Jul 2021 11:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/38415 |
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