Observation of an interedge magnetoplasmon mode in a degenerate two-dimensional electron gas.
Observation of an interedge magnetoplasmon mode in a degenerate two-dimensional electron gas.
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简并二维电子气中边缘磁等离子体模式的观察。
DOI：
10.1103/physrevlett.93.196801
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发表时间：
2004
影响因子：
8.6
通讯作者：
R. Haug
中科院分区：
文献类型：
--
作者：
G. Sukhodub;F. Hohls;R. Haug
我们研究了边缘磁等离子体激元的传播时间分辨的电流测量在一个样品中，它允许选择性地检测边缘状态的量子霍尔制度。在填充因子接近nu=3，我们观察到两个解耦模式的边缘激发，其中之一是有关的最内层的可压缩带，并确定为interedge磁等离子体激元模式。通过对各模式传播速度的分析，导出了边缘结构的内部空间参数。
We study the propagation of edge magnetoplasmons by time-resolved current measurements in a sample which allows for selective detection of edge states in the quantum Hall regime. At filling factors close to nu=3 we observe two decoupled modes of edge excitations, one of which is related to the innermost compressible strip and is identified as an interedge magnetoplasmon mode. From the analysis of the propagation velocities of each mode the internal spatial parameters of the edge structure are derived.