EDGE MAGNETOPLASMONS IN SINGLE 2-DIMENSIONAL ELECTRON DISKS AT MICROWAVE-FREQUENCIES - DETERMINATION OF THE LATERAL DEPLETION LENGTH

被引：21

作者：

DAHL, C ^{[1
]}

MANUS, S ^{[1
]}

KOTTHAUS, JP ^{[1
]}

NICKEL, H ^{[1
]}

SCHLAPP, W ^{[1
]}

机构：

[1] TELEKOM FORSCH & TECHNOL ZENTRUM,D-64295 DARMSTADT,GERMANY

来源：

APPLIED PHYSICS LETTERS | 1995年 / 66卷 / 17期

关键词：

D O I：

10.1063/1.113189

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a new method to determine the lateral depletion length (LDL) at the boundary of a two-dimensional electron system (2DES). This approach exploits the fact that in high magnetic fields certain plasma excitations of the confined 2DES (edge-magnetoplasmons, EMPs) are sensitive to details of the density profile near the edge. Comparing the measured magnetic-field dispersion of EMPs in a circular mesa with existing classical theories, the LDL is found to be between 0.3 and 0.6 μm for an electron density of 3.0×1011cm-2. © 1995 American Institute of Physics.

引用

页码：2271 / 2273

页数：3

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