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Structure of a Single Sharp Quantum Hall Edge Probed by Momentum-Resolved Tunneling

DOI to cite this document:
Huber, Michael ; Grayson, M. ; Rother, Martin ; Biberacher, W. ; Wegscheider, Werner ; Abstreiter, Gerhard
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Date of publication of this fulltext: 11 Jan 2010 13:33


Momentum-resolved magnetotunneling spectroscopy is performed at a single sharp quantum Hall (QH) edge to probe the structure of integer QH edge modes. An epitaxially overgrown cleaved edge is shown to realize the sharp-edge limit with interchannel distances smaller than both the magnetic length and the Bohr radius where the Chklovskii soft-edge picture is no longer valid. The line shape of ...


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