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

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.11959

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

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Veröffentlichungsdatum dieses Volltextes: 11 Jan 2010 13:33

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Zusammenfassung

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distances smaller than both the magnetic length and the Bohr radius where the Chklovskii soft-edge picture is no longer valid.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 ...