245 citations · 827 across the 13 of their papers we have counts for
13 papers
Continuous correlated states and dual-flatness in a moiré heterostructure
Mohammed M. Al Ezzi, Na Xin, Yanmeng Shi +13
Many-body effects in condensed matter yield novel quantum states when the electronic density of states is enhanced. A vivid example is flat bands, which suppress kinetic energy and…
Helical Edge States and Quantum Phase Transitions in Tetralayer Graphene
Shi Che, Yanmeng Shi, Jiawei Yang +9
Helical conductors with spin-momentum locking are promising platforms for Majorana fermions. Here we report observation of two topologically distinct phases supporting helical edge…
Tunable van Hove Singularities and Correlated States in Twisted Trilayer Graphene
Yanmeng Shi, Shuigang Xu, Mohammed M. Al Ezzi +16
Understanding and tuning correlated states is of great interest and significance to modern condensed matter physics. The recent discovery of unconventional superconductivity and Mo…
Stacking Order in Graphite Films Controlled by Van der Waals Technology
Yaping Yang, Yi-Chao Zou, Colin R. Woods +10
In graphite crystals, layers of graphene reside in three equivalent, but distinct, stacking positions typically referred to as A, B, and C projections. The order in which the layer…
Imaging Quantum Spin Hall Edges in Monolayer WTe2
Yanmeng Shi, Joshua Kahn, Ben Niu +9
A two-dimensional (2D) topological insulator (TI) exhibits the quantum spin Hall (QSH) effect, in which topologically protected spin-polarized conducting channels exist at the samp…
Twist Angle-Dependent Bands and Valley Inversion in 2D Materials/hBN Heterostructures
Shi Che, Petr Stepanov, Supeng Ge +13
The use of relative twist angle between adjacent atomic layers in a van der Waals heterostructure, has emerged as a new degree of freedom to tune electronic and optoelectronic prop…
Large tunable intrinsic gap in rhombohedral-stacked tetralayer graphene
K. Myhro, S. Che, Y. Shi +5
In rhombohedral-stacked few-layer graphene, the very flat energy bands near the charge neutrality point are unstable to electronic interactions, giving rise to states with spontane…
Tunable Lifshitz Transitions and Multiband Transport in Tetralayer Graphene
Yanmeng Shi, Shi Che, Kuan Zhou +8
As the Fermi level and band structure of two-dimensional materials are readily tunable, they constitute an ideal platform for exploring Lifshitz transition, a change in the topolog…
Surface Transport and Quantum Hall Effect in Ambipolar Black Phosphorus Double Quantum Wells
Son Tran, Jiawei Yang, Nathaniel Gillgren +10
Quantum wells constitute one of the most important classes of devices in the study of 2D systems. In a double layer QW, the additional "which-layer" degree of freedom gives rise to…
Unusual interlayer quantum transport behavior caused by the zeroth Landau level in YbMnBi2
J. Y. Liu, J. Hu, D. Graf +10
Relativistic fermions in topological quantum materials are characterized by linear energy-momentum dispersion near band crossing points. Under magnetic field, relativistic fermions…
Weak Localization and Electron-electron Interactions in Few Layer Black Phosphorus Devices
Yanmeng Shi, Nathaniel Gillgren, Timothy Espiritu +5
Few layer phosphorene(FLP) devices are extensively studied due to its unique electronic properties and potential applications on nano-electronics . Here we present magnetotransport…
Energy gaps and layer polarization of integer and fractional quantum Hall states in bilayer graphene
Yanmeng Shi, Yongjin Lee, Shi Che +6
Owing to the spin, valley, and orbital symmetries, the lowest Landau level (LL) in bilayer graphene exhibits multicomponent quantum Hall ferromagnetism. Using transport spectroscop…
Gate Tunable Quantum Oscillations in Air-Stable and High Mobility Few-Layer Phosphorene Heterostructures
Nathaniel Gillgren, Darshana Wickramaratne, Yanmeng Shi +12
As the only non-carbon elemental layered allotrope, few-layer black phosphorus or phosphorene has emerged as a novel two-dimensional (2D) semiconductor with both high bulk mobility…