Abstract
We report on a novel ballistic electron spectrometer that images the k-space structure of open orbits confined by a magnetic field gradient. Magnetoresistance measurements were performed on a AlGaAs/GaAs/Dy device which supported magnetic edge states. Point contacts were used to ensure the commensurability of edge state period to the length of the waveguide. Periodic oscillations in the non-local magnetoresistance were observed, which we ascribe to the discrete nature of the orbits. A semi-classical model is used to describe the device, and gives good agreement with experimental results.
| Original language | English |
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| Pages (from-to) | 1507-1510 |
| Number of pages | 4 |
| Journal | International Journal of Modern Physics B |
| Volume | 21 |
| Issue number | 8-9 |
| Publication status | Published - 2007 |