Seminar 1: Carlo Beenakker, The search for chiral Andreev edge states Presentation [time=0:01:31] Skipping-orbits for both electrons and holes are in the same direction (opposite sign of both charge and mass). Expt. 10.1103/PhysRevB.76.115313 (maybe add a theory reference here) [time=0:04:52] Chiral modes don't necessarily transport a unit of charge. The transferred charge can even be zero. [time=0:05:31] The early works in the field are in "skipping orbit" limit. It is important to reach the single Landau level regime. [time=0:07:19] In graphene, Andreev reflection switches the valleys. Furthermore, the lowest Landau level in graphene is valley polarized. Therefore, there is no electron-hole conversion when the superconductor covers a single edge.

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