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

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

2010-08-05

arxiv.org/abs/1008.0963v2

Physical Review B 82, 201310(R) (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

as published

Scientific paper

10.1103/PhysRevB.82.201310

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 non-equilibrium transport via skipping orbits in two-dimensional electron system.

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