Plateau Behavior in the Chiral Luttinger Liquid Exponent.
The current-voltage power law exponent, alpha, for electron tunneling into chiral Luttinger liquids at the fractional quantum Hall edge is found to exhibit a plateaulike structure at alpha close to 3 as the filling factor, nu, is varied. The presence of a plateau near alpha = 3 strongly suggests a fundamental connection between alpha and the structure of the underlying quantum ground states associated with the robust incompressible nu = 1/3 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.
Chang
AM
Department of Physics, Purdue University, West Lafayette, Indiana 47907 and National Tsing-Hua University, 101 Kuang-Fu Road, Section 2, Hsin-Chu, Taiwan, Republic of China.
Wu
MK
Chi
CC
Pfeiffer
LN
West
KW