Khrapai, V. S. and Ludwig, S. and Kotthaus, J. P. and Tranitz, H. P. and Wegscheider, Werner (2006) Double-dot quantum ratchet driven by an independently biased quantum point contact. PHYSICAL REVIEW LETTERS, 97 (17): 176803. ISSN 0031-9007,
Full text not available from this repository.Abstract
We study a double quantum dot (DQD) coupled to a strongly biased quantum point contact (QPC), each embedded in independent electric circuits. For weak interdot tunneling we observe a finite current flowing through the Coulomb blockaded DQD in response to a strong bias on the QPC. The direction of the current through the DQD is determined by the relative detuning of the energy levels of the two quantum dots. The results are interpreted in terms of a quantum ratchet phenomenon in a DQD energized by a nearby QPC.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NOISE-INDUCED TRANSPORT; ELECTRON-TRANSPORT; BROWNIAN MOTORS; CONDUCTANCE; |
| 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: | 20 Jan 2021 09:08 |
| Last Modified: | 20 Jan 2021 09:08 |
| URI: | https://pred.uni-regensburg.de/id/eprint/33861 |
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