Local spectroscopy of edge channels in the quantum Hall regime with local probe techniques

被引：18
作者：
Ihn, T
Rychen, J
Vancura, T
Ensslin, K
Wegscheider, W
Bichler, M
机构：
[1] Swiss Fed Inst Technol, Solid State Phys Lab, CH-8093 Zurich, Switzerland
[2] Univ Regensburg, D-93040 Regensburg, Germany
[3] Walter Schottky Inst, D-85748 Garching, Germany
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2002年 / 13卷 / 2-4期
关键词：
quantum hall effect; edge channels; scanning probe techniques;
D O I：
10.1016/S1386-9477(02)00255-2
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We present measurements of the tunnelling conductance between edge channels in the quantum Hall regime. By using a local potential perturbation induced by the tip of a scanning force microscope we are able to enhance the tunnelling coupling and map its strength along the edge of the two-dimensional electron gas. It is suggested that the presented method is promising for the local investigation of inter-edge-channel scattering and edge-channel equilibration. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：671 / 674
页数：4
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