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

页码：671 / 674

页数：4

共 27 条

[21] DIRECT OBSERVATION OF EDGE CHANNELS IN THE INTEGER QUANTUM HALL REGIME [J].