Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1547537 | Physica E: Low-dimensional Systems and Nanostructures | 2006 | 4 Pages |
Abstract
We report finite-bias differential conductance measurements through a split-gate constriction in the integer quantum Hall regime at ν=1. Both enhanced and suppressed zero-bias inter-edge backscattering can be obtained in a controllable way by changing the split-gate voltage. This behavior is interpreted in terms of local charge depletion and particle-hole symmetry. We discuss the relevance of particle-hole symmetry in connection with the chiral Luttinger model of edge states.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Stefano Roddaro, Umberto Perinetti, Vittorio Pellegrini, Fabio Beltram, Loren N. Pfeiffer, Ken W. West,