Imaging Coulomb Islands in a Quantum Hall Interferometer

Details Imaging Coulomb Islands in a Quantum Hall Interferometer Imaging Coulomb Islands in a Quantum Hall Interferometer

2010-10-21

arxiv.org/abs/1010.4494v1

Nature Communications 1:39 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1038/ncomms1038

In the Quantum Hall regime, near integer filling factors, electrons should only be transmitted through spatially-separated edge states. However, in mesoscopic systems, electronic transmission turns out to be more complex, giving rise to a large spectrum of magnetoresistance oscillations. To explain these observations, recent models put forward that, as edge states come close to each other, electrons can hop between counterpropagating edge channels, or tunnel through Coulomb islands. Here, we use scanning gate microscopy to demonstrate the presence of quantum Hall Coulomb islands, and reveal the spatial structure of transport inside a quantum Hall interferometer. Electron islands locations are found by modulating the tunneling between edge states and confined electron orbits. Tuning the magnetic field, we unveil a continuous evolution of active electron islands. This allows to decrypt the complexity of high magnetic field magnetoresistance oscillations, and opens the way to further local scale manipulations of quantum Hall localized states.

Affiliated with

Also associated with

No associations

Rating

Imaging Coulomb Islands in a Quantum Hall Interferometer 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 Imaging Coulomb Islands in a Quantum Hall Interferometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging Coulomb Islands in a Quantum Hall Interferometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-423784