Abstract
We measure the tunneling conductance ( ) and current-voltage ( ) characteristics for electron tunneling from a bulk doped-GaAs normal metal into the abrupt edge of a fractional quantum Hall effect. We observe clear power law behavior for both the relationship and the conductance versus temperature. For tunneling into the edge the power law persists for one decade in ( ), and 2.7 (1.7) decades in ( ). This strongly indicates the 1/3 edge behaves like a chiral Luttinger liquid. In contrast, the edge is essentially linear, while the 2/3 edge is slightly nonlinear.
- Received 25 April 1996
DOI:https://doi.org/10.1103/PhysRevLett.77.2538
©1996 American Physical Society