Schinner, G. J. and Tranitz, H. P. and Wegscheider, W. and Kotthaus, J. P. and Ludwig, S. (2009) Phonon-Mediated Nonequilibrium Interaction between Nanoscale Devices. PHYSICAL REVIEW LETTERS, 102 (18): 186801. ISSN 0031-9007, 1079-7114
Full text not available from this repository.Abstract
Interactions between mesoscopic devices induced by interface acoustic phonons propagating in the plane of a two-dimensional electron system (2DES) are investigated by phonon spectroscopy. In our experiments, ballistic electrons injected from a biased quantum point contact emit phonons and a portion of them are reabsorbed exciting electrons in a nearby degenerate 2DES. We perform energy spectroscopy on these excited electrons employing a tunable electrostatic barrier in an electrically separate and unbiased detector circuit. The transferred energy is found to be bounded by a maximum value corresponding to Fermi-level electrons excited and backscattered by absorbing interface phonons. Our results imply that phonon-mediated interaction plays an important role for the decoherence of solid-state-based quantum circuits.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 2-DIMENSIONAL ELECTRON-GAS; COULOMB DRAG; SCATTERING; HETEROSTRUCTURES; TRANSPORT; EMISSION; |
| 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: | 15 Sep 2020 11:18 |
| Last Modified: | 15 Sep 2020 11:18 |
| URI: | https://pred.uni-regensburg.de/id/eprint/28979 |
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