Acoustic-phonon-based interaction between coplanar quantum circuits in a magnetic field

Prokudina, M. G. and Khrapai, V. S. and Ludwig, S. and Kotthaus, J. P. and Tranitz, H. P. and Wegscheider, W. (2010) Acoustic-phonon-based interaction between coplanar quantum circuits in a magnetic field. PHYSICAL REVIEW B, 82 (20): 201310. ISSN 2469-9950, 2469-9969

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Abstract

We explore the acoustic-phonon-based interaction between two neighboring coplanar circuits containing semiconductor quantum point contacts in a perpendicular magnetic field B. In a drag-type experiment, a current flowing in one of the circuits (unbiased) is measured in response to an external current in the other. In moderate B the sign of the induced current is determined solely by the polarity of B. This indicates that the spatial regions where the phonon emission/reabsorption is efficient are controlled by magnetic field. The results are interpreted in terms of nonequilibrium transport via skipping orbits in a two-dimensional electron system.

Item Type: Article
Uncontrolled Keywords: COULOMB DRAG; ELECTRON-GAS; SYSTEMS;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 06 Jul 2020 11:07
Last Modified: 06 Jul 2020 11:07
URI: https://pred.uni-regensburg.de/id/eprint/23875

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