Abstract
The current-voltage power law exponent, , for electron tunneling into chiral Luttinger liquids at the fractional quantum Hall edge is found to exhibit a plateaulike structure at close to 3 as the filling factor, , is varied. The presence of a plateau near strongly suggests a fundamental connection between and the structure of the underlying quantum ground states associated with the robust incompressible Hall fluid. However, the position in the inverse filling factor where the plateau occurs can vary between samples and appears shifted to values higher than expected from theory.
- Received 16 June 1999
DOI:https://doi.org/10.1103/PhysRevLett.86.143
©2001 American Physical Society