Moiré commensurability and the quantum anomalous Hall effect in twisted bilayer graphene on hexagonal boron nitride
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TLDR
The quantum anomalous Hall effect occurs in twisted bilayer graphene when it is nearly aligned with an encapsulating hexagonal boron nitride (hBN) layer as discussed by the authors.Abstract:
The quantum anomalous Hall effect sometimes occurs in twisted bilayer graphene when it is nearly aligned with an encapsulating hexagonal boron nitride (hBN) layer. The authors argue that the quantum anomalous Hall effect is likely only when the graphene/graphene and graphene/hBN moir\'e patterns are nearly commensurate. This picture gives rise to the series of ``Hall windows'' in the twist-angle space illustrated here.read more
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Evidence for unconventional superconductivity in twisted bilayer graphene.
Myungchul Oh,Kevin P. Nuckolls,Dillon Wong,Ryan L. Lee,Xiaomeng Liu,Kenji Watanabe,Takashi Taniguchi,Ali Yazdani +7 more
TL;DR: In this article, the tunnelling spectra of magic-angle twisted bilayer graphene (MATBG) were compared with those of a conventional s-wave superconductor with an anisotropic pairing mechanism.
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Low-frequency and Moiré–Floquet engineering: A review
TL;DR: In this article, the authors review recent work on low-frequency Floquet engineering and its application to quantum materials driven by light, focusing on van der Waals systems hosting Moire superlattices.
Journal ArticleDOI
Chern mosaic and Berry-curvature magnetism in magic-angle graphene
Sameer Grover,Matan Bocarsly,Aviram Uri,Petr Stepanov,G. D. Battista,Indranil Roy,Jiewen Xiao,Alexander Y. Meltzer,Yuri Myasoedov,Keshav Pareek,Kenji Watanabe,Takashi Taniguchi,Binghai Yan,Ady Stern,Erez Berg,Dmitri K. Efetov,Eli Zeldov +16 more
TL;DR: In this paper , a SQUID-on-tip was used to directly image the nanoscale Berry-curvature-induced equilibrium orbital magnetism, the polarity of which is governed by the local Chern number, and detect its two constituent components associated with the drift and the self-rotation of the electronic wave packets.
Journal ArticleDOI
Band structure and superconductivity in twisted trilayer graphene
TL;DR: In this article, the role of long-range electron-electron interactions near the first magic angle was analyzed in the band structure of twisted trilayer graphene, and superconducting phases with either spin-singlet/valley-triplet or spin-triplets/valleyssinglet symmetry were found with critical temperatures up to a few Kelvin.
Journal ArticleDOI
Flat bands, strains, and charge distribution in twisted bilayer h − BN
TL;DR: In this article, the effect of twisting on bilayer bilayers was studied, and the effects of lattice relaxation on the electronic structure, piezoelectric charges, and spontaneous polarization were investigated.
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