Keyser, UF and Fuhner, C and Borck, S and Haug, RJ and Bichler, M and Abstreiter, G and Wegscheider, W (2003) Kondo effect in a few-electron quantum ring. PHYSICAL REVIEW LETTERS, 90 (19): 196601. ISSN 0031-9007,
Full text not available from this repository. (Request a copy)Abstract
A small quantum ring with less than ten electrons was studied by transport spectroscopy. For strong coupling to the leads a Kondo effect is observed and used to characterize the spin structure of the system in a wide range of magnetic fields. At small magnetic fields Aharonov-Bohm oscillations influenced by Coulomb interaction appear. They exhibit phase jumps by pi at the Coulomb-blockade resonances. Inside Coulomb-blockade valleys the Aharonov-Bohm oscillations can also be studied due to the finite conductance caused by the Kondo effect. Astonishingly, the maxima of the oscillations show linear shifts with increasing magnetic field and gate voltage.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ADDITION SPECTRUM; ANDERSON MODEL; DOT; TRANSISTOR; COULOMB; SPECTROSCOPY; OSCILLATIONS; TRANSPORT; REGIME; STATES; |
| 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: | 18 May 2021 06:01 |
| Last Modified: | 18 May 2021 06:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/38996 |
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