Experimental demonstration of a sharp quantum Hall edge

DOI to cite this document:: 10.5283/epub.11814

Grayson, M. ; Huber, Michael ; Rother, Martin ; Biberacher, W. ; Wegscheider, Werner ; Bichler, Max ; Abstreiter, Gerhard

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Date of publication of this fulltext: 11 Jan 2010 13:16

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Abstract

This article highlights the history of the quantum Hall edge, focusing on the distinction between sharp and smooth edges. We then introduce an edge-tunneling geometry consisting of two orthogonal quantum wells wherein magneto-tunneling measurements at a cleaved-edge overgrown quantum Hall edge are made. Peaks in the tunnel conductance are shown to arise from momentum conserved tunneling into ...