Abstract
In a tunnel coupled GaAs/AlGaAs electron bilayer system (BLS), we compare transport measurements of 1D quantum Hall (QH) edge channels with lithographically defined quantum point contacts (QPCs). The electron densities in both systems can be varied by a top-gate. In a perpendicular magnetic field, Landau level mixing is observed in the QH regime, and indications of crossings of spin split QPC subbands are detected.
| Original language | English |
|---|---|
| Pages (from-to) | 2910-2914 |
| Number of pages | 5 |
| Journal | International Journal of Modern Physics B |
| Volume | 23 |
| Issue number | 12-13 |
| DOIs | |
| State | Published - 20 May 2009 |
Keywords
- Bilayer
- GaAs/AlGaAs
- Quantum Hall effect
- Quantum point contacts
- Tunnel coupling
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