Point contact spectroscopy of magnetic edge states
Reference:
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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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.
Details
| Item Type | Articles |
| Creators | Lambert, N. J., Nogaret, A. R., Sassine, S., Portal, J. C., Beere, H. E. and Ritchie, D. A. |
| Departments | Faculty of Science > Physics |
| Refereed | Yes |
| Status | Published |
| ID Code | 8633 |
| Additional Information | ID number: ISI:000251988900059 |
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