Publikation: Mapping of surface potentials by electrons on a helium film
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A novel way to investigate perturbations of the electrostatic potential across a sample surface is presented, aiming at application in 2D contact phenomena. The idea is to deposit surface state electrons (SSE) on a thin layer of liquid helium covering the surface of a solid state sample. The density of the SSE adjusts to screen perturbations of the electrostatic potential across the sample. As a result, the helium layer thickness varies due to the variation of the electrostatic pressure, thus providing a map. This map may be read interferometrically by a technique already employed for the investigation of multi-electron dimples on helium. We realized this mapping for a structured metal electrode as a test sample to investigate the resolution of the method.
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TESKE, Ekkehard, Paul LEIDERER, Peter WYDER, Valeri SHIKIN, 1998. Mapping of surface potentials by electrons on a helium film. In: Journal of Low Temperature Physics. 1998, 110(1-2), pp. 249-254. Available under: doi: 10.1023/A:1022564112184BibTex
@article{Teske1998Mappi-9285, year={1998}, doi={10.1023/A:1022564112184}, title={Mapping of surface potentials by electrons on a helium film}, number={1-2}, volume={110}, journal={Journal of Low Temperature Physics}, pages={249--254}, author={Teske, Ekkehard and Leiderer, Paul and Wyder, Peter and Shikin, Valeri} }
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