Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-10-19
Phys.Rev.B 84, 245447 (2011)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
6 pages, 9 figures
Scientific paper
10.1103/PhysRevB.84.245447
The conductance of a two-dimensional electron gas at the transition from one quantum Hall plateau to the next has sample-specific fluctuations as a function of magnetic field and Fermi energy. Here we identify a universal feature of these mesoscopic fluctuations in a Corbino geometry: The amplitude of the magnetoconductance oscillations has an e^2/h resonance in the transition region, signaling a change in the topological quantum number of the insulating bulk. This resonance provides a signed scaling variable for the critical exponent of the phase transition (distinct from existing positive definite scaling variables).
Akhmerov Anton R.
Beenakker C. W. J.
Fulga I. C.
Hassler Fabian
No associations
LandOfFree
Topological quantum number and critical exponent from conductance fluctuations at the quantum Hall plateau transition 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 Topological quantum number and critical exponent from conductance fluctuations at the quantum Hall plateau transition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Topological quantum number and critical exponent from conductance fluctuations at the quantum Hall plateau transition will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-597406