Giant Valley-Isospin Conductance Oscillations in Ballistic Graphene

DOI to cite this document:: 10.5283/epub.36101

Handschin, Clevin ; Makk, Péter ; Rickhaus, Peter

; Maurand, Romain ; Watanabe, Kenji ; Taniguchi, Takashi ; Richter, Klaus ; Liu, Ming-Hao

; Schönenberger, Christian

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Date of publication of this fulltext: 29 Aug 2017 06:16

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Abstract

At high magnetic fields the conductance of graphene is governed by the half-integer quantum Hall effect. By local electrostatic gating a p-n junction perpendicular to the graphene edges can be formed, along which quantum Hall channels copropagate. It has been predicted by Tworzidlo and co-workers that if only the lowest Landau level is filled on both sides of the junction, the conductance is ...