112 citations · 393 across the 13 of their papers we have counts for
14 papers
Spin pumping effect in non-Fermi liquid metals
Xiao-Tian Zhang, Yi-Hui Xing, Xu-Ping Yao +3
Spin pumping effect is a sensitive and well-established experimental method in two-dimensional (2D) magnetic materials. We propose that spin pumping effect can be a valuable probe…
Finite-Size Scaling Analysis of the Planck's Quantum-Driven Integer Quantum Hall Transition in Spin- Kicked Rotor Model
Jia-Long Zhang, Long Zhang, Fu-Chun Zhang
The quantum kicked rotor (QKR) model is a prototypical system in the research of quantum chaos. In a spin- QKR, tuning the effective Planck parameter realizes a series of tran…
Anomalous Conductance Oscillations in the Hybridization Gap of InAs/GaSb Quantum Wells
Zhongdong Han, Tingxin Li, Long Zhang +2
We observe the magnetic oscillation of electric conductance in the two-dimensional InAs/GaSb quantum spin Hall insulator. Its insulating bulk origin is unambiguously demonstrated b…
Exact Solution to Haldane-BCS-Hubbard Model Along the Symmetric Lines: Interaction Induced Topological Phase Transition
Jian-Jian Miao, Dong-Hui Xu, Long Zhang +1
We propose a Haldane-BCS-Hubbard model on a honeycomb lattice, which is composed of two copies of the Haldane model of the quantum anomalous Hall effect, an equal-spin pairing term…
Monte Carlo Study of Lattice Compact Quantum Electrodynamics with Fermionic Matter: the Parent State of Quantum Phases
Xiao Yan Xu, Yang Qi, Long Zhang +3
The interplay between lattice gauge theories and fermionic matter accounts for fundamental physical phenomena ranging from the deconfinement of quarks in particle physics to quantu…
Possible Quantum Paraelectric State in Kitaev Spin Liquid Candidate HLiIrO
Shuai Wang, Long Zhang, Fa Wang
A new quantum spin liquid (QSL) candidate material HLiIrO was synthesized recently and was found not to show any magnetic order or phase transition down to low te…
Superconductivity proximate to antiferromagnetism in a copper-oxide monolayer grown on BiSrCaCuO
Shuai Wang, Long Zhang, Fa Wang
A nodeless superconducting (SC) gap was reported in a recent scanning tunneling spectroscopy experiment of a copper-oxide monolayer grown on the BiSrCaCuO (Bi22…
Unconventional Surface Critical Behaviors Induced by Quantum Phase Transition from Two-Dimensional Affleck-Kennedy-Lieb-Tasaki Phase to Néel Order
Long Zhang, Fa Wang
A symmetry-protected topological phase has nontrivial surface states in the presence of certain symmetries, which can either be gapless or be degenerate. In this work, we study the…
Compass Impurity Model of Tb Substitution in Sr2IrO4
Long Zhang, Fa Wang, Dung-Hai Lee
We show that upon Tb substitution the interaction between the magnetic moments on the impurity Tb ion and its surrounding Ir ions is described by a "compass" model, i…
Quantum oscillation in narrow-gap topological insulators
Long Zhang, Xue-Yang Song, Fa Wang
The canonical understanding of quantum oscillation in metals is challenged by the observation of de Haas-van Alphen effect in an insulator, SmB [Tan \emph{et al}, Science {\b…
Quantum Oscillation as Diagnostics of Pseudogap State in Underdoped Cuprates
Long Zhang, Jia-Wei Mei
The Fermi surface in underdoped cuprates is reconstructed by the charge density wave (CDW) order in the pseudogap phase. Theoretical proposals can be divided into two classes: one…
Reconstructed Fermi surface and quantum oscillation of doped resonating valence bond state with incommensurate charge order in underdoped cuprates
Long Zhang, Jia-Wei Mei
Recent experiments have revealed incommensurate charge density wave (CDW) in the pseudogap regime in underdoped cuprates, e.g. YBaCuO and HgBaCuO. Howev…
Sign Structure, Electron Fractionalization, and Emergent Gauge Description of the Hubbard Model
Long Zhang, Zheng-Yu Weng
The Fermi sign structure plays a crucial role for a Landau's Fermi liquid. In this work, we identify the exact sign structure for the bipartite Hubbard model at an arbitrary streng…
Superconductivity in Mutual Chern-Simons Gauge Theory
Peng Ye, Long Zhang, Zheng-Yu Weng
In this work, we present a topological characterization of superconductivity in a prototype electron fractionalization model for doped Mott insulators. In this model, spinons and h…