Electron focusing with multiparallel one-dimensional channels made by focused ion beam
- 22 January 1990
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 56 (4) , 385-387
- https://doi.org/10.1063/1.102793
Abstract
Electron focusing effect is observed in a two-dimensional electron gas using samples with simple multiparallel one-dimensional channels made by a Be focused ion beam (FIB). Subharmonics and harmonics are resolved; their strengths allow a direct determination of the elastic scattering length le =1.8 μm and the specularity coefficient p=0.35 for electron reflection at the boundary defined by the FIB. The temperature dependence of the focusing effect is much weaker than the Shubnikov–de Haas effect.Keywords
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