Abstract
We have developed an optical-fiber-based Hall potential imaging system using the Pockels effect in GaAs/AlGaAs two dimensional electron systems (2DES) in the quantum Hall regime to investigate current distributions. The mapping of the Hall potential shows the current concentration at the bulk region of 2DES samples, where the critical current depends on the channel width sub-linearly. We report in detail the experimental techniques of the imaging system operating in high magnetic fields.
| Original language | English |
|---|---|
| Pages (from-to) | 1414-1418 |
| Number of pages | 5 |
| Journal | International Journal of Modern Physics B |
| Volume | 21 |
| Issue number | 8-9 |
| Publication status | Published - 2007 Apr 10 |
| Externally published | Yes |
Keywords
- Pockels effect
- Potential distribution
- Quantum Hall effect
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Statistical and Nonlinear Physics
- Mathematical Physics