期刊
PHYSICAL REVIEW B
卷 82, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.201310
关键词
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资金
- FRBR
- RF President Fund [MK-3470.2009.2]
- German Excellence Initiative via the Nanosystems Initiative Munich (NIM)
- Humboldt Foundation
- Russian Science Support Foundation
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.
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