Acoustic-phonon-based interaction between coplanar quantum circuits in a magnetic field
Acoustic-phonon-based interaction between coplanar quantum circuits in a magnetic field
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磁场中共面量子电路之间基于声子的相互作用
DOI：
10.1103/physrevb.82.201310
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发表时间：
2010
影响因子：
3.7
通讯作者：
W. Wegscheider
中科院分区：
文献类型：
--
作者：
M.G. Prokudina;V.S. Khrapai;S. Ludwig;J.P. Kotthaus;H.P. Tranitz;W. Wegscheider
我们研究了垂直磁场中两个相邻的含半导体量子点接触的共面电路之间基于声学声子的相互作用。在拖曳式实验中，响应于另一个电路中的外部电流，测量其中一个电路（无偏置）中流动的电流。在中等程度上，感应电流的符号仅由电极的极性决定。这表明声子发射/再吸收有效的空间区域受磁场控制。结果解释在非平衡输运通过跳跃轨道在一个二维电子系统。
We explore the acoustic-phonon-based interaction between two neighboring coplanar circuits containing semiconductor quantum point contacts in a perpendicular magnetic field. 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 moderatethe sign of the induced current is determined solely by the polarity of. 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.