976 citations · 10.2k across the 89 of their papers we have counts for
89 papers
Ideal Weak Topological Insulator and Protected Helical Saddle Points
Ji Seop Oh, Tianyi Xu, Nikhil Dhale +16
The paradigm of classifying three-dimensional (3D) topological insulators into strong and weak ones (STI and WTI) opens the door for the discovery of various topological phases of…
Strong Dzyaloshinskii-Moriya Interaction in Monolayer CrI on Metal Substrates
Fan Zhang, Xueao Li, Yabei Wu +3
Dzyaloshinskii-Moriya interaction (DMI) is the primary mechanism for realizing real-space chiral spin textures, which are regarded as key components for the next-generation spintro…
Bulk and Surface Critical Behaviors of quantum Heisenberg antiferromagnet on a two-dimensional coupled diagonal ladders
Zhe Wang, Fan Zhang, Wenan Guo
Using Quantum Monte Carlo simulations, we study the spin-1/2 Heisenberg model on a two-dimensional lattice formed by coupling diagonal ladders. The model hosts an antiferromagnetic…
Minimal non-abelian nodal braiding in ideal metamaterials
Huahui Qiu, Qicheng Zhang, Tingzhi Liu +3
Exploring new topological phases and phenomena has become a vital topic in condensed matter physics and material sciences. It is generally believed that a pair of band nodes with o…
Evidence for Flat Band Dirac Superconductor Originating from Quantum Geometry
Haidong Tian, Shi Che, Tianyi Xu +7
In a flat band superconductor, the charge carriers' group velocity vF is extremely slow, quenching their kinetic energy. The emergence of superconductivity thus appears paradoxical…
Quantum cascade of new correlated phases in trigonally warped bilayer graphene
Anna M. Seiler, Fabian R. Geisenhof, Felix Winterer +5
Divergent density of states offers the unique opportunity to explore a wide variety of correlated electron physics. In the thinnest limit, this has been predicted and verified in t…
Room-temperature quantum spin Hall edge state in a higher-order topological insulator BiBr
Nana Shumiya, Md Shafayat Hossain, Jia-Xin Yin +24
Room-temperature realization of macroscopic quantum phenomena is one of the major pursuits in fundamental physics. The quantum spin Hall state, a topological quantum phenomenon tha…
Phonon Stability of Quantum Droplets in a dipolar Bose gases
Fan Zhang, Lan Yin
Stabilized by quantum fluctuations, dipolar Bose-Einstein condensates can form self-bound liquidlike droplets in the mean-field unstable regime. However in the Bogoliubov theory, s…
Acoustic Möbius insulators from projective symmetry
Tianzi Li, Juan Du, Qicheng Zhang +4
Symmetry plays a critical role in classifying phases of matter. This is exemplified by how crystalline symmetries enrich the topological classification of materials and enable unco…
Tunable quantum anomalous Hall octet driven by orbital magnetism in bilayer graphene
Fabian R. Geisenhof, Felix Winterer, Anna M. Seiler +4
The quantum anomalous Hall (QAH) effect - a macroscopic manifestation of chiral band topology at zero magnetic field - has only been experimentally realized by magnetic doping of t…
Room-Temperature Topological Phase Transition in Quasi-One-Dimensional Material BiI
Jianwei Huang, Sheng Li, Chiho Yoon +16
Quasi-one-dimensional (1D) materials provide a superior platform for characterizing and tuning topological phases for two reasons: i) existence for multiple cleavable surfaces that…
Three-dimensional charge density wave and robust zero-bias conductance peak inside the superconducting vortex core of a kagome superconductor CsVSb
Zuowei Liang, Xingyuan Hou, Fan Zhang +9
The transition-metal-based kagome metals provide a versatile platform for correlated topological phases hosting various electronic instabilities. While superconductivity is rare in…
Room-Temperature Superconductivity in Boron-Nitrogen Doped Lanthanum Superhydride
Yanfeng Ge, Fan Zhang, Russell J. Hemley
Recent theoretical and experimental studies of hydrogen-rich materials at megabar pressures (i.e., >100 GPa) have led to the discovery of very high-temperature superconductivity in…
Strong mid-infrared photoresponse in small-twist-angle bilayer graphene
Bingchen Deng, Chao Ma, Qiyue Wang +5
Recently the small-twist-angle (< 2°) bilayer graphene has received extraordinary attentions due to its exciting physical properties. Compared with monolayer graphene, the Brilloui…
Hole-Doped Room-Temperature Superconductivity in HSZ (Z=C, Si)
Yanfeng Ge, Fan Zhang, Ranga P. Dias +2
We examine the effects of the low-level substitution of S atoms by C and Si atoms on the superconductivity of HS with the structure at megabar pressure. The hole d…
Higher-order Dirac sonic crystals
Huahui Qiu, Meng Xiao, Fan Zhang +1
Discovering new topological phases of matter is a major theme in fundamental physics and materials science. Dirac semimetal provides an exceptional platform for exploring topologic…
Quasi-One-Dimensional Higher-Order Topological Insulators
Chiho Yoon, Cheng-Cheng Liu, Hongki Min +1
Quasi-1D materials BiX (X=Br,I) are prototype weak topological insulators (TI) in the phase. For the phases, recent high-throughput database screening suggests…
Inelastic electron tunneling in 2H-TaNbSe evidenced by scanning tunneling spectroscopy
Xing-Yuan Hou, Fan Zhang, Xin-Hai Tu +12
We report a detailed study of tunneling spectra measured on 2H-TaNbSe () single crystals using a low-temperature scanning tunneling microscope. The pro…
Observation of quadratic Weyl points and double-helicoid arcs
Hailong He, Chunyin Qiu, Xiangxi Cai +4
Very recently, novel quasiparticles beyond those mimicking the elementary high-energy particles such as Dirac and Weyl fermions have attracted great interest in condensed matter ph…
First-principles study of metal-graphene edge contact for ballistic Josephson junction
Yeonghun Lee, Jeongwoon Hwang, Fan Zhang +1
Edge-contacted superconductor-graphene-superconductor Josephson junction have been utilized to realize topological superconductivity, which have shown superconducting signatures in…
Composite Dirac Semimetal
Ziming Zhu, Zhi-Ming Yu, Weikang Wu +4
Weak topological insulators and Dirac semimetals are gapped and nodal phases with distinct topological properties, respectively. Here, we propose a novel topological phase that exh…
Flavor Quantum Dots and Artificial Quark Model in Transition Metal Dichalcogenides
Zhi-qiang Bao, Patrick Cheung, Fan Zhang
We show that the triply degenerate Q valleys in few-layer transition metal dichalcogenides provide a unique platform for exploring the rare flavor SU(3) symmetry in quantum dot geo…
Moiré Band Topology in Twisted Bilayer Graphene
Chao Ma, Qiyue Wang, Scott Mills +9
Recently twisted bilayer graphene (t-BLG) emerges as a new strongly correlated physical platform near a magic twist angle, which hosts many exciting phenomena such as the Mott-like…
Correlated Insulating and Superconducting States in Twisted Bilayer Graphene Below the Magic Angle
Emilio Codecido, Qiyue Wang, Ryan Koester +9
The emergence of flat bands and correlated behaviors in 'magic angle' twisted bilayer graphene (tBLG) has sparked tremendous interest, though many aspects of the system are under i…