Point contact spectroscopy of magnetic edge states
Lambert, N. J., Nogaret, A. R., Sassine, S., Portal, J. C., Beere, H. E. and Ritchie, D. A., 2007. Point contact spectroscopy of magnetic edge states. International Journal of Modern Physics B, 21 (8-9), pp. 1507-1510.
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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.
|Creators||Lambert, N. J., Nogaret, A. R., Sassine, S., Portal, J. C., Beere, H. E. and Ritchie, D. A.|
|Departments||Faculty of Science > Physics|
|Additional Information||ID number: ISI:000251988900059|
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