481 citations · 3k across the 53 of their papers we have counts for
53 papers
Enhanced Population on Ionic Excited States by Synchronized Ionization and Multiphoton Resonance
Yewei Chen, Hongbin Lei, Quanjun Wang +12
We study population distributions and lasing actions of N_2^+ driven by femtosecond lasers with various wavelengths, and uncover an efficient ionic excitation mechanism induced by…
Observation of first-order quantum phase transitions and ferromagnetism in twisted double bilayer graphene
Le Liu, Xin Lu, Yanbang Chu +14
Twisted graphene multilayers are highly tunable flatband systems for developing new phases of matter. Thus far, while orbital ferromagnetism has been observed in valley polarized p…
Lattice distortions, moiré phonons, and relaxed electronic band structures in magic-angle twisted bilayer graphene
Bo Xie, Jianpeng Liu
In this work, we present a theoretical research on the lattice relaxations, phonon properties, and relaxed electronic structures in magic-angle twisted bilayer graphene (TBG). We c…
Theory for charge density wave and orbital-flux state in antiferromagnetic kagome metal FeGe
Hai-Yang Ma, Jia-Xin Yin, M. Zahid Hasan +1
In this work, we theoretically study the charge order and orbital magnetic properties of a new type of antiferromagnetic kagome metal FeGe. Based on first principles density functi…
Effective manipulation and realization of a colossal nonlinear Hall effect in an electric-field tunable moiré system
Jinrui Zhong, Junxi Duan, Shihao Zhang +7
The second-order nonlinear Hall effect illuminates a frequency-doubling transverse current emerging in quantum materials with broken inversion symmetry even when time-reversal symm…
Imaging real-space flat band localization in kagome magnet FeSn
Daniel Multer, Jia-Xin Yin, Md. Shafayat Hossain +12
Kagome lattices host flat bands due to their frustrated lattice geometry, which leads to destructive quantum interference of electron wave functions. Here, we report imaging of the…
Magnetic domain structure and domain wall bound states of topological semimetal EuB6
Qiang Li, Haiyang Ma, Xin Zhang +5
Electrically manipulating domain wall (DW) is at central in the field of spintronics. Magnetic Weyl semimetal (WSM) offers an additional knob for electric manipulation of DW by uti…
Flat bands, non-trivial band topology and electronic nematicity in layered kagome-lattice RbTiBi
Zhicheng Jiang, Zhengtai Liu, Haiyang Ma +15
Layered kagome-lattice materials with 3 transition metals provide a fertile playground for studies on geometry frustration, band topology and other novel ordered states. A repre…
Electronic Origin of Half-metal to Semiconductor Transition and Colossal Magnetoresistance in Spinel HgCr2Se4
Aiji Liang, Zhilin Li, Shihao Zhang +13
Half-metals are ferromagnets hosting spin-polarized conducting carriers and crucial for spintronics applications. The chromium spinel HgCr2Se4 represents a unique type of half-meta…
Nonreciprocal Charge Transport in Topological Kagome Superconductor CsVSb
Yueshen Wu, Qi Wang, Xiang Zhou +14
Nonreciprocal charge transport phenomena are widely studied in two-dimensional superconductors, which demonstrate unidirectional-anisotropy magnetoresistances as a result of symmet…
Tunable quantum criticalities in an isospin extended Hubbard model simulator
Qiao Li, Bin Cheng, Moyu Chen +13
Studying strong electron correlations has been an essential driving force for pushing the frontiers of condensed matter physics. In particular, in the vicinity of correlation-drive…
Observation of Coexisting Dirac Bands and Moiré Flat Bands in Magic-Angle Twisted Trilayer Graphene
Yiwei Li, Shihao Zhang, Fanqiang Chen +17
Moiré superlattices that consist of two or more layers of two-dimensional materials stacked together with a small twist angle have emerged as a tunable platform to realize various…
Synergistic correlated states and nontrivial topology in coupled graphene-insulator heterostructures
Xin Lu, Shihao Zhang, Yaning Wang +7
In this work, we study the synergistic correlated states in two distinct types of interacting electronic systems coupled by interlayer Coulomb interactions. We propose that this sc…
Observation of Γ-valley moiré bands and emergent hexagonal lattice in twisted transition metal dichalcogenides
Ding Pei, Binbin Wang, Zishu Zhou +19
Twisted van der Waals heterostructures have recently been proposed as a condensed-matter platform for realizing controllable quantum models due to the low-energy moiré bands with s…
Quantum oscillations in field-induced correlated insulators of a moiré superlattice
Le Liu, Yanbang Chu, Guang Yang +14
We report an observation of quantum oscillations (QOs) in the correlated insulators with valley anisotropy of twisted double bilayer graphene (TDBG). The anomalous QOs are best cap…
Storage and manipulation of single x-ray photons via nuclear hyperfine splitting
Guangru Bai, Zengxiu Zhao, Jianpeng Liu +3
We introduce a technique to store and manipulate single x-ray photons which relies on dynamically controlled absorption via nuclear hyperfine magnetic splitting. This scheme is inh…
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…