481 citations · 3k across the 53 of their papers we have counts for
14 papers · 1 filter
Phonons in magic-angle twisted bilayer graphene
Xiaoqian Liu, Ran Peng, Zhaoru Sun +1
Magic-angle twisted bilayer graphene (TBG) has attracted significant interest recently due to the discoveries of diverse correlated and topological states in this system. Despite t…
Isospin competitions and valley polarized correlated insulators in twisted double bilayer graphene
Le Liu, Shihao Zhang, Yanbang Chu +13
New phase of matter usually emerges when a given symmetry breaks spontaneously, which can involve charge, spin, and valley degree of freedoms. Here, we report an observation of new…
First principles theory for the magnetic and charge instabilities in AVSb systems
Hai-Yang Ma, Jianpeng Liu
Vanadium-based materials AVSb (A=K, Rb, Cs) with layered kagome lattice structures have drawn great attention recently due to the discoveries of topologically nontrivial ba…
Alternating twisted mutilayer graphene: generic partition rules, double flat bands, and orbital magnetoelectric effect
Bo Xie, Shihao Zhang, Jianpeng Liu
Twisted graphene systems have draw significant attention due to the discoveries of various correlated and topological phases. In particular, recently the alternating twisted trilay…
Tunable intrinsic ferromagnetic topological phases in bulk van der Waals crystal MnSb6Te10
Xin Zhang, Shihao Zhang, Zhicheng Jiang +14
Intrinsic ferromagnetism is a crucial ingredient to realize quantum anomalous Hall effect in quasi two dimensional materials, thus the search of intrinsic ferromagnetic topological…
Imaging topological torus lattice from an electron crystal in twisted mono-bilayer graphene
Si-yu Li, Zhengwen Wang, Yucheng Xue +9
A variety of exotic quantum phases of matter have been created by Van der Waals heterostructures. Moreover, these twisted heterostructures provide a feasible way of braiding correl…
Quantum Hall phase in graphene engineered by interfacial charge coupling
Yaning Wang, Xiang Gao, Kaining Yang +18
Quantum Hall effect (QHE), the ground to construct modern conceptual electronic systems with emerging physics, is often much influenced by the interplay between the host two-dimens…
Magnetization tunable Weyl states in EuB6
Hao Su, Xianbiao Shi, Jian Yuan +7
The interplay between magnetism and topological band structure offers extraordinary opportunities to realize rich exotic magnetic topological phases such as axion insulators, Weyl…
Topological piezoelectric response in moiré graphene systems
Ran Peng, Jianpeng Liu
We theoretically study the piezoelectric effects in moirè graphene systems. Since the strain couples to the electrons in the system as a pseudo vector potential, which has opposite…
Correlated insulators, density wave states, and their nonlinear optical response in magic-angle twisted bilayer graphene
Shihao Zhang, Xin Lu, Jianpeng Liu
The correlated insulator (CI) states and the recently discovered density wave (DW) states in magic-angle twisted bilayer graphene (TBG) have stimulated intense research interest. H…
Fractionalization on the Surface: Is Type-II Terminated -TaS Surface an Anomalously Realized Spin Liquid?
Chao-Kai Li, Xu-Ping Yao, Jianpeng Liu +1
The type-II terminated -TaS surface of a three-dimensional -TaS bulk material realizes the effective spin- degree of freedom on each David star cluster with ${…
Multifunctional Antiferromagnetic Materials with Giant Piezomagnetism and Noncollinear Spin Current
Hai-Yang Ma, Mengli Hu, Nana Li +4
We propose a new type of spin-valley locking (SVL), named -paired SVL, in antiferromagnetic systems, which directly connects the spin/valley space with the real space,…
Multiple magnetic topological phases in bulk van der Waals crystal MnSb4Te7
Shuchun Huan, Shihao Zhang, Zhicheng Jiang +11
The magnetic van der Waals crystals MnBi2Te4/(Bi2Te3)n have drawn significant attention due to their rich topological properties and the tunability by external magnetic field. Alth…
Spin polarized nematic order, quantum valley Hall states, and field tunable topological transitions in twisted multilayer graphene systems
Shihao Zhang, Xi Dai, Jianpeng Liu
We theoretically study the correlated insulator states, quantum anomalous Hall (QAH) states, and field-induced topological transitions between different correlated states in twiste…