513 citations · 2.5k across the 31 of their papers we have counts for
6 papers · 1 filter
Band bending at interfaces between topological insulator Bi2Se3 and transition metals
Weiguang Ye, A. B. Pakhomov, Shuigang Xu +11
Interfaces between exfoliated topological insulator Bi2Se3 and several transition metals deposited by sputtering were studied by XPS, SIMS, UPS and contact I-V measurements. Chemic…
Observation of Valley Zeeman and Quantum Hall Effects at Q Valley of Few-Layer Transition Metal Disulfides
Zefei Wu, Shuigang Xu, Huanhuan Lu +10
In few-layer (FL) transition metal dichalcogenides (TMDC), the conduction bands along the Gamma-K directions shift downward energetically in the presence of interlayer interactions…
Negative Compressibility in Graphene-terminated Black Phosphorus Heterostructures
Yingying Wu, Xiaolong Chen, Zefei Wu +7
Negative compressibility generated by many-body effects in 2D electronic systems can enhance gate capacitance. We observe capacitance enhancement in a newly emerged 2D layered mate…
Quantum Hall Effect in Ultrahigh Mobility Two-dimensional Hole Gas of Black Phosphorus
Gen Long, Denis Maryenko, Junying Shen +9
We demonstrate that a field effect transistor (FET) made of few layer black phosphorus (BP) encapsulated in hexagonal boron nitride (h-BN) in vacuum, exhibts the room temperature h…
Fast Transfer-free Synthesis of High-quality Monolayer Graphene on Insulating Substrates by Simple Rapid Thermal Treatment
Zefei Wu, Yanqing Guo, Yuzheng Guo +13
The transfer-free synthesis of high-quality, large-area graphene on a given dielectric substrate, which is highly desirable for device applications, remains a significant challenge…
Universal low-temperature Ohmic contacts for quantum transport in transition metal dichalcogenides
Shuigang Xu, Zefei Wu, Huanhuan Lu +14
Low carrier mobility and high electrical contact resistance are two major obstacles prohibiting explorations of quantum transport in TMDCs. Here, we demonstrate an effective method…