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Creating and Steering Highly Directional Electron Beams in Graphene

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Liu, Ming-Hao ; Gorini, Cosimo ; Richter, Klaus
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Date of publication of this fulltext: 20 Mar 2019 12:49


We put forward a concept to create highly collimated, nondispersive electron beams in pseudorelativistic Dirac materials such as graphene or topological insulator surfaces. Combining negative refraction and Klein collimation at a parabolic pn junction, the proposed lens generates beams, as narrow as the focal length, that stay focused over scales of several microns and can be steered by a ...


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