Electron interferometry at a heterojunction interface
- 22 October 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (17) , 2165-2168
- https://doi.org/10.1103/physrevlett.65.2165
Abstract
We have used the tunneling microscope to excite electron standing waves over clean and adsorbate-covered surfaces. For smooth, continuous overlayers we observe a resonance in the conductivity spectra that is absent on the clean surface, over film defects, and over film areas that are rough on a length scale of the electron’s de Broglie wavelength. By making reasonable assumptions of the adlayer thickness and interface scattering strength, the resonance can be modeled by a quantum-size effect in electron transmission through the adlayer.Keywords
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