Twistronics in graphene-based van der Waals structures

YN Ren, Y Zhang, YW Liu, L He - Chinese Physics B, 2020 - iopscience.iop.org
The electronic properties of van der Waals (vdW) structures can be substantially modified by
the moiré superlattice potential, which strongly depends on the twist angle among the …

Pair-density-wave and chiral superconductivity in twisted bilayer transition metal dichalcogenides

YM Wu, Z Wu, H Yao - Physical Review Letters, 2023 - APS
We theoretically explore possible orders induced by weak repulsive interactions in twisted
bilayer transition metal dichalcogenides (eg, WSe 2) in the presence of an out-of-plane …

Tunable sample-wide electronic kagome lattice in low-angle twisted bilayer graphene

Q Zheng, CY Hao, XF Zhou, YX Zhao, JQ He, L He - Physical Review Letters, 2022 - APS
Overlaying two graphene layers with a small twist angle θ can create a moiré superlattice to
realize exotic phenomena that are entirely absent in a graphene monolayer. A …

Tunable lattice reconstruction, triangular network of chiral one-dimensional states, and bandwidth of flat bands in magic angle twisted bilayer graphene

YW Liu, Y Su, XF Zhou, LJ Yin, C Yan, SY Li, W Yan… - Physical Review Letters, 2020 - APS
The interplay between interlayer van der Waals interaction and intralayer lattice distortion
can lead to structural reconstruction in slightly twisted bilayer graphene (TBG) with the twist …

Real-Space Mapping of Local Subdegree Lattice Rotations in Low-Angle Twisted Bilayer Graphene

YN Ren, Z Zhan, YW Liu, C Yan, S Yuan, L He - Nano Letters, 2023 - ACS Publications
In two-dimensional small-angle twisted bilayers, van der Waals (vdW) interlayer interaction
introduces an atomic-scale reconstruction, which consists of a moiré-periodic network of …

Realizing valley-polarized energy spectra in bilayer graphene quantum dots via continuously tunable Berry phases

YN Ren, Q Cheng, QF Sun, L He - Physical Review Letters, 2022 - APS
The Berry phase plays an important role in determining many physical properties of
quantum systems. However, tuning the energy spectrum of a quantum system via Berry …

Moiré straintronics: a universal platform for reconfigurable quantum materials

M Kögl, P Soubelet, M Brotons-Gisbert… - npj 2D Materials and …, 2023 - nature.com
Abstract Large-scale two-dimensional (2D) moiré superlattices are driving a revolution in
designer quantum materials. The electronic interactions in these superlattices, strongly …

Detection of graphene's divergent orbital diamagnetism at the Dirac point

J Vallejo Bustamante, NJ Wu, C Fermon… - Science, 2021 - science.org
The electronic properties of graphene have been intensively investigated over the past
decade. However, the singular orbital magnetism of undoped graphene, a fundamental …

Coexistence of reconstructed and unreconstructed structures in the structural transition regime of twisted bilayer graphene

XF Zhou, YW Liu, CY Hao, C Yan, Q Zheng, YN Ren… - Physical Review B, 2023 - APS
In twisted bilayer graphene (TBG), a twist-angle-dependent competition between interlayer
stacking energy and intralayer elastic energy results in flat rigid layers at large twist angles …

Magnetic-field-tunable valley-contrasting pseudomagnetic confinement in graphene

YN Ren, YC Zhuang, QF Sun, L He - Physical Review Letters, 2022 - APS
Introducing quantum confinement has uncovered a rich set of interesting quantum
phenomena and allows one to directly probe the physics of confined (quasi-) particles. In …