The structure of a single sharp quantum Hall edge probed by momentum-resolved tunneling

Details The structure of a single sharp quantum Hall edge probed by momentum-resolved tunneling The structure of a single sharp quantum Hall edge probed by momentum-resolved tunneling

2004-11-11

arxiv.org/abs/cond-mat/0411303v1

Phys. Rev. Lett. 94, 016805 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.94.016805

Momentum resolved magneto-tunnelling spectroscopy is performed at a single sharp quantum Hall edge. We directly probe the structure of individual integer quantum Hall (QH) edge modes, and find that an epitaxially overgrown cleaved edge realizes the sharp edge limit, where the Chklovskii picture relevant for soft etched or gated edges is no longer valid. The Fermi wavevector in the probe quantum well probes the real-space position of the QH edge modes, and reveals inter-channel distances smaller than both the magnetic length and the Bohr radius. We quantitatively describe the lineshape of principal conductance peaks and deduce an edge filling factor from their position consistent with the bulk value. We observe features in the dispersion which are attributed to fluctuations in the ground energy of the quantum Hall system.

Affiliated with

Also associated with

No associations

Rating

The structure of a single sharp quantum Hall edge probed by momentum-resolved tunneling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The structure of a single sharp quantum Hall edge probed by momentum-resolved tunneling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The structure of a single sharp quantum Hall edge probed by momentum-resolved tunneling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-273771