Determination of the resistance across incompressible strips through imaging of charge motion
Abstract
Using charge-accumulation imaging, we measure the charge flow across an incompressible strip and follow its evolution with magnetic field. The strip runs parallel to the edge of a gate deposited on the sample and forms at positions where an exact number of integer Landau levels is filled. An RC model of charging fits the data well and enables us to determine the resistance across the strip. Surprisingly, we find that the strip becomes more resistive as its width decreases.
- Publication:
-
Physical Review B
- Pub Date:
- March 2002
- DOI:
- 10.1103/PhysRevB.65.121312
- arXiv:
- arXiv:cond-mat/0110443
- Bibcode:
- 2002PhRvB..65l1312G
- Keywords:
-
- 73.43.-f;
- 73.43.Fj;
- 73.23.-b;
- 73.40.-c;
- Quantum Hall effects;
- Novel experimental methods;
- measurements;
- Electronic transport in mesoscopic systems;
- Electronic transport in interface structures;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 5 pages, 4 figures, submitted to PRB Rapid Communications