90 citations · 451 across the 21 of their papers we have counts for
19 papers · 1 filter
Non-Abelian chiral spin liquid in a spin- antiferromagnet on the square lattice
Xiao-Tian Zhang, Yuan Yang, D. N. Sheng +1
Non-Abelian chiral spin liquids (CSLs) host non-Abelian anyon excitations and are promising platforms for topological quantum computation. However, realizing non-Abelian CSLs in sh…
Topological Chiral Superconductivity in the Triangular-Lattice Hofstadter-Hubbard Model
Feng Chen, Wen O. Wang, Jia-Xin Zhang +2
Moiré materials provide exciting platforms for studying the interplay of strong electronic correlation and large magnetic flux effects. We study the lightly doped Hofstadter-Hubbar…
Tuning competition between charge order and superconductivity in the square-lattice -- model
Xin Lu, Huaiming Guo, Wei-Qiang Chen +2
Recently, a flurry of works have found strong competition between charge density wave (CDW) and superconductivity (SC) in the doped Hubbard and - models on the square lattice…
Robust non-Abelian even-denominator fractional Chern insulator in twisted bilayer MoTe
Feng Chen, Wei-Wei Luo, Wei Zhu +1
A recent experiment observes a series of quantum spin Hall effects in transition metal dichalcogenide moiré MoTe [K. Kang, et. al, Nature 628, 522-526 (2024)]. Among them, the…
Quantum Melting of Generalized Wigner Crystals in Transition Metal Dichalcogenide Moiré Systems
Yiqing Zhou, D. N. Sheng, Eun-Ah Kim
Generalized Wigner Crystal (GWC) is a novel quantum phase of matter driven by further-range interaction at fractional fillings of a lattice. The role of further range interaction a…
Chiral spin liquid and quantum phase diagram of spin- -- model on the square lattice
Xiao-Tian Zhang, Yixuan Huang, Han-Qing Wu +2
We study the spin- Heisenberg model on the square lattice with the first and second nearest-neighbor antiferromagnetic couplings , , as well as the three-spin scalar…
Magnetic field induced partially polarized chiral spin liquid in a transition metal dichalcogenide moiré system
Yixuan Huang, D. N. Sheng, Jian-Xin Zhu
As one of the most intriguing states of matter, the chiral spin liquid (CSL) has attracted much scientific interest while its existence and mechanism in crystalline strongly correl…
Emergent Superconductivity and Competing Charge Orders in Hole-Doped Square-Lattice - Model
Xin Lu, Feng Chen, W. Zhu +2
The square-lattice Hubbard and closely related - models are considered as basic paradigms for understanding strong correlation effects and unconventional superconductivity (S…
Sign structure of the -- model and its physical consequences
Xin Lu, Jia-Xin Zhang, Shou-Shu Gong +2
Understanding the doped Mott insulator is a central challenge in condensed matter physics. In this work, we first explicitly identify a new sign structure in the -- model…
Global quantum phase diagram and non-Abelian chiral spin liquid in a spin-3/2 square lattice antiferromagnet
Wei-Wei Luo, Yixuan Huang, D. N. Sheng +1
Since strong quantum fluctuations are essential for the emergence of quantum spin liquids, there have been extensive exploration and identification of spin liquid candidates in spi…
Anomalous Bilayer Quantum Hall Effect
Gurjyot Sethi, D. N. Sheng, Feng Liu
In parallel to the condensed-matter realization of quantum Hall (Chern insulators), quantum spin Hall (topological insulators), and fractional quantum Hall (fractional Chern insula…
Quantum Phase Diagram and Spontaneously Emergent Topological Chiral Superconductivity in Doped Triangular-Lattice Mott Insulators
Yixuan Huang, Shou-Shu Gong, D. N. Sheng
The topological superconducting state is a highly sought-after quantum state hosting topological order and Majorana excitations. In this work, we explore the mechanism to realize t…
Topological flat bands in a kagomé lattice multiorbital system
Satoshi Okamoto, Narayan Mohanta, Elbio Dagotto +1
Flat bands and dispersive Dirac bands are known to coexist in the electronic bands in a two-dimensional kagome lattice. Including the relativistic spin-orbit coupling, such systems…
Topological chiral and nematic superconductivity by doping Mott insulators on triangular lattice
Yixuan Huang, D. N. Sheng
The mechanism of the unconventional topological superconductivity (TSC) remains a long-standing issue. We investigate the quantum phase diagram of the extended -- model…
Unconventional quantum phase transitions in a one-dimensional Lieb-Schultz-Mattis system
Wayne Zheng, D. N. Sheng, Yuan-Ming Lu
We study quantum phases and phase transitions in a one-dimensional interacting fermion system with a Lieb-Schultz-Mattis (LSM) type anomaly. Specifically, the inversion symmetry en…
Coexistence of non-Abelian chiral spin liquid and magnetic order in a spin-1 antiferromagnet
Yixuan Huang, W. Zhu, Shou-Shu Gong +2
We study the ground-state properties of a spin-1 Heisenberg model on a square lattice with the first- and second-nearest-neighbor antiferromagnetic couplings and and a…
Quantum Phases of Transition Metal Dichalcogenide Moiré Systems
Yiqing Zhou, D. N. Sheng, Eun-Ah Kim
Moiré systems provide a rich platform for studies of strong correlation physics. Recent experiments on hetero-bilayer transition metal dichalcogenide (TMD) Moiré systems are exciti…
Robust d-wave superconductivity in the square-lattice - model
Shoushu Gong, W. Zhu, D. N. Sheng
Unravelling competing orders emergent in doped Mott insulators and their interplay with unconventional superconductivity is one of the major challenges in condensed matter physics.…
Quantum Spin Liquid with Emergent Chiral Order in the Triangular-lattice Hubbard Model
Bin-Bin Chen, Ziyu Chen, Shou-Shu Gong +3
The interplay between spin frustration and charge fluctuation gives rise to an exotic quantum state in the intermediate-interaction regime of the half-filled triangular-lattice Hub…