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.
Original language | English (US) |
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Pages (from-to) | 132-135 |
Number of pages | 4 |
Journal | Physica E: Low-Dimensional Systems and Nanostructures |
Volume | 34 |
Issue number | 1-2 |
DOIs | |
State | Published - Aug 2006 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
Keywords
- Mesoscopic systems and quantum Hall effect
- Strongly correlated electrons