211 citations · 659 across the 12 of their papers we have counts for
12 papers
Strong structural and electronic coupling in metavalent PbS moire superlattices
Yu Wang, Zhigang Song, Jiawei Wan +7
Moire superlattices are twisted bilayer materials, in which the tunable interlayer quantum confinement offers access to new physics and novel device functionalities. Previously, mo…
The bulk van der Waals layered magnet CrSBr is a quasi-1D material
Julian Klein, Benjamin Pingault, Matthias Florian +21
Correlated quantum phenomena in one-dimensional (1D) systems that exhibit competing electronic and magnetic order are of strong interest for studying fundamental interactions and e…
Eshelby-twisted 3D moire superlattices
Zhigang Song, Xiaotian Sun, Lin-Wang Wang
Twisted bilayers of van der Waals materials have recently attracted great attention due to their tunable strongly correlated phenomena. Here, we investigate the chirality-specific…
Valley pseudospin in monolayer MoSi2N4 and MoSi2As4
Chen Yang, Zhigang Song, Xiaotian Sun +1
For a long time, two-dimensional (2D) hexagonal MoS2 was proposed as a promising material for valleytronic system. However, the limited size of growth and low carrier motilities in…
Discovery of Two-Dimensional Multiferroicity in van der Waals CuCrP2S6 Layers
Youfang Lai, Zhigang Song, Yi Wan +6
Multiferroic materials are potential to be applied in novel magnetoelectric devices, for example, high-density non-volatile storage. Last decades, research on multiferroic material…
Spontaneous Valley Splitting and Valley Pseudospin Field Effect Transistor of Monolayer VAgP2Se6
Zhigang Song, Xiaotian Sun, Jingshan Qi +6
Valleytronics is a rising topic to explore the emergent degree of freedom for charge carriers in energy band edges and has attracted a great interest due to many intriguing quantum…
Does P-type Ohmic Contact Exist in WSe2-metal Interfaces?
Yangyang Wang, Ruoxi Yang, Ruge Quhe +9
Formation of low-resistance metal contacts is the biggest challenge that masks the intrinsic exceptional electronic properties of 2D WSe2 devices. We present the first comparative…
Monolayer Phosphorene-Metal Interfaces
Yuanyuan Pan, Yangyang Wang, Meng Ye +9
Recently, phosphorene electronic and optoelectronic prototype devices have been fabricated with various metal electrodes. We systematically explore for the first time the contact p…
Interfacial Properties of Monolayer and Bilayer MoS2 Contacts with Metals: Beyond the Energy Band Calculations
Hongxia Zhong, Zeyuan Ni, Yangyang Wang +8
Although many prototype devices based on two-dimensional (2D) MoS2 have been fabricated and wafer scale growth of 2D MoS2 has been realized, the fundamental nature of 2D MoS2-metal…
Tunable Valley Polarization and Valley Orbital Magnetic Moment Hall Effect in Honeycomb Systems with Broken Inversion Symmetry
Zhigang Song, Ruge Quhe, Yan Li +3
In this Letter, a tunable valley polarization is investigated for honeycomb systems with broken inversion symmetry such as transition-metal dichalcogenide MX2 (M = Mo, W; X = S, Se…
Low-Energy Effective Hamiltonian for Giant-Gap Quantum Spin Hall Insulators in Honeycomb X-Hydride/Halide (X=N-Bi) Monolayers
Cheng-Cheng Liu, Shan Guan, Zhigang Song +3
Using the tight-binding method in combination with first-principles calculations, we systematically derive a low-energy effective Hilbert subspace and Hamiltonian with spin-orbit c…
Quantum spin Hall insulators and quantum valley Hall insulators of BiX/SbX (X = H, F, Cl, and Br) monolayers with a record bulk band gap
Zhigang Song, Cheng-Cheng Liu, Jinbo Yang +7
Large bulk band gap is critical for application of the quantum spin Hall (QSH) insulator or two dimensional (2D) topological insulator (TI) in spintronic device operating at room t…