Ihn, Thomas and Rychen, J. and Vancura, T. and Ensslin, Klaus and Wegscheider, Werner and Bichler, Max (2002) Local spectroscopy of edge channels in the quantum Hall regime with local probe techniques. Physica E Low-dimensional Systems and Nanostructures 13 (2-4), pp. 671-674.
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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.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Keywords:||Quantum Hall effect; Edge channels; Scanning probe techniques|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||07 Dec 2009 13:20|
|Last Modified:||20 Jul 2011 22:11|