Imaging of double slit interference by scanning gate microscopy
arXiv:1404.6068 · doi:10.1103/PhysRevB.90.165303
Abstract
We consider scanning gate microscopy imaging of the double slit interference for a pair of quantum point contacts (QPCs) defined within the two-dimensional electron gas. The interference is clearly present in the scattered electron wave functions for each of the incident subbands. Nevertheless, we find that the interference is generally missing in the experimentally accessible conductance maps for many incident subbands. We explain this finding on the basis of the Landauer approach. A setup geometry allowing for observation of the double slit interference by the scanning gate microscopy is proposed.
6 pages, 7 figures
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- Conductance measurement of spin-orbit coupling in the two-dimensional electron systems with in-plane magnetic field
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