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Moiré Periodic and Quasiperiodic Crystals in Heterostructures of Twisted Bilayer Graphene and Hexagonal Boron Nitride
Xinyuan Lai, Guohong Li, Angela M. Coe +4
Stacking two atomic crystals with a twist between their crystal axes produces moiré potentials that modify the electronic properties. Here we show that double moiré potentials gene…
Cryogen-free modular scanning tunneling microscope operating at 4-K in high magnetic field on a compact ultra-high vacuum platform
Angela M. Coe, Guohong Li, Eva Y. Andrei
One of the daunting challenges in modern low temperature scanning tunneling microscopy (STM) is the difficulty of combining atomic resolution with cryogen free cooling. Further fun…
Quick connect scanning tunneling microscope head with nested piezoelectric coarse walkers
Angela M. Coe, Guohong Li, Eva Y. Andrei
To meet changing research demands, new scanning tunneling microscope (STM) features must constantly evolve. We describe the design, development, and performance of a modular plugin…
Imaging Self-aligned Moiré Crystals and Quasicrystals in Magic-angle Bilayer Graphene on hBN Heterostructures
Xinyuan Lai, Daniele Guerci, Guohong Li +5
Using scanning-tunneling-microscopy and theoretical modeling on heterostructures of twisted bilayer graphene and hexagonal Boron-Nitride, we show that the emergent super-moire stru…
Revealing the Charge Density Wave Proximity Effect in Graphene on 1T-TaS2
Michael A. Altvater, Sheng-Hsiung Hung, Nikhil Tilak +6
Proximity effect is a very powerful approach and has been widely applied to induce electron correlations such as: superconductivity, magnetism and spin-orbit effects at the interfa…
Flat band carrier confinement in magic-angle twisted bilayer graphene
Nikhil Tilak, Xinyuan Lai, Shuang Wu +5
Magic angle twisted bilayer graphene has emerged as a powerful platform for studying strongly correlated electron physics, owing to its almost dispersionless low-energy bands and t…