Anomalous vortex-shaped ferrimagnetic hysteresis in exfoliated highly oriented pyrolytic graphite with distorted moiresuperlattices

Article Multidisciplinary Sciences

Tunable strongly coupled superconductivity in magic-angle twisted trilayer graphene

Jeong Min Park et al.

Summary: Moire superlattices have become a platform for studying correlated physics and superconductivity with unprecedented tunability. This study on magic-angle twisted trilayer graphene reveals a better tunability of electronic structure and superconducting properties than magic-angle twisted bilayer graphene, with implications for the understanding of strongly coupled superconductivity. The results suggest that the system can be electrically tuned close to the crossover to a two-dimensional Bose-Einstein condensate, indicating the potential for revolutionizing applications of superconductivity.

NATURE (2021)

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Article Materials Science, Multidisciplinary

Interplay of edge/screw dislocations and enhanced magnetism in exfoliated pyrolytic graphite with distorted hexagonal moire superlattices

Filippo S. Boi et al.

Summary: The study investigates the structural and magnetic properties of exfoliated lamellae from HOPG, revealing distortion effects in the moire-superlattices. The results suggest contributions from edge and screw dislocations in the Burgers-Bragg-Read-Shockley model, and electron paramagnetic resonance investigations show shifts in the pi-electron absorption feature, possibly indicating defect-induced electron correlation effects. Magnetometry measurements indicate an unusual magnetization enhancement as a result of the exfoliation process.

CARBON TRENDS (2021)

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Article Chemistry, Physical