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Emergent magnetic texture in driven twisted bilayer graphene


The transport properties of a twisted bilayer graphene barrier are investigated for various twist angles. Remarkably, for small twist angles around the magic angle $\theta_m \sim 1.05^{\circ}$, the local currents around the AA-stacked regions are strongly enhanced compared to the injected electron rate. Furthermore, the total and counterflow (magnetic) current patterns show high correlations in these regions, given rise to well-defined magnetic moments that form a magnetic Moir\'e superlattice. The orientation and magnitude of these magnetic moments changes as function of the gate voltage and possible implications for emergent spin-liquid behaviour are discussed.

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Article information

08 Apr 2020
20 Jun 2020
First published
22 Jun 2020

Nanoscale, 2020, Accepted Manuscript
Article type

Emergent magnetic texture in driven twisted bilayer graphene

D. A. Bahamon, G. Gómez-Santos and T. Stauber, Nanoscale, 2020, Accepted Manuscript , DOI: 10.1039/D0NR02786C

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