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Band conductivity oscillations in a gate-tunable graphene superlattice

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Huber, Robin ; Steffen, Max-Niklas ; Drienovsky, Martin ; Sandner, Andreas ; Watanabe, Kenji ; Taniguchi, Takashi ; Pfannkuche, Daniela ; Weiss, Dieter ; Eroms, Jonathan
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 25 May 2022 05:09


Electrons exposed to a two-dimensional (2D) periodic potential and a uniform, perpendicular magnetic field exhibit a fractal, self-similar energy spectrum known as the Hofstadter butterfly. Recently, related high-temperature quantum oscillations (Brown-Zak oscillations) were discovered in graphene moire systems, whose origin lies in the repetitive occurrence of extended minibands/magnetic Bloch ...


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