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Graphene paves the way for novel product enabling industrial users

Researchers demonstrate the long-term stability of the epigraphene quantum Hall chip, which represents a key step towards enabling end-users to maintain their own resistance standards.

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Stronger graphene oxide ‘paper’ made with weaker units

Counterintuitive discovery is likely applicable to other 2D materials.

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Graphene aerogel keeps single-atom catalysts stable

Unconventional support material firmly anchors active species, prevents agglomeration

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How do atoms vibrate in graphene nanostructures?

Researchers have developed a method capable to measure all phonons existing in a nanostructured material. This is a breakthrough in the analysis of nanoscale functional materials and devices.

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How do atoms vibrate in graphene nanostructures?

Innovative new electron spectroscopy technique pushes the limits of nanospectroscopy for materials design.

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Researchers take a direct image of magic-angle twisted graphene sheets

Understanding the ‘magic angle’ – a specific orientation between the stacked graphene that yields special electric properties – could pave the way to realizing the dream of room-temperature superconductors, which could transmit enormous electric currents while producing zero heat.

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Ferromagnetism in magic-angle graphene

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Twisted bilayer graphene goes magnetic

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Emergent ferromagnetism near three-quarters filling in twisted bilayer graphene

When two sheets of graphene are stacked at a small twist angle, the resulting flat superlattice minibands are expected to strongly enhance electron-electron interactions. Here, we present evidence that near three-quarters () filling of the conduction miniband, these enhanced interactions drive the twisted bilayer graphene into a ferromagnetic state. In a narrow density range around an apparent insulating state at , we observe emergent ferromagnetic hysteresis, with a giant anomalous Hall (AH) effect as large as 10.4 kilohms and indications of chiral edge states. Notably, the magnetization of the sample can be reversed by applying a small direct current. Although the AH resistance is not quantized, and dissipation is present, our measurements suggest that the system may be an incipient Chern insulator.

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[ASAP] Quantum Interference Engineering of Nanoporous Graphene for Carbon Nanocircuitry

TOC Graphic

Journal of the American Chemical Society
DOI: 10.1021/jacs.9b04649

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