153 citations · 255 across the 4 of their papers we have counts for
4 papers
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…
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…
Softening of Roton and Phonon Modes in a Bose-Einstein Condensate with Spin-Orbit Coupling
Si-Cong Ji, Long Zhang, Xiao-Tian Xu +4
Roton-type excitations usually emerge from strong correlations or long-range interactions, as in superfluid helium or dipolar ultracold atoms. However, in weakly short-range intera…