15 citations · 18 across the 4 of their papers we have counts for
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Persistent Corner Spin Mode at the Quantum Critical Point of a Plaquette Heisenberg Model
Yining Xu, Chen Peng, Zijian Xiong +1
Gapless edge states are the hallmark of a large class of topological states of matter. Recently, intensive research has been devoted to understanding the physical properties of the…
Deconfined Quantum Phase Transition of a Higher-Order Symmetry-Protected Topological State
Chen Peng, Long Zhang, Zhong-Yi Lu
A higher-order (HO) symmetry-protected topological (SPT) state can be realized in a plaquette-modulated square lattice antiferromagnet, which hosts a spin- degenerate mode on…
Combined spontaneous symmetry-breaking and symmetry-protected topological order from cluster charge interaction
Chen Peng, Rong-Qiang He, Yuan-Yao He +1
The study of symmetry-protected topological states in presence of electron correlations has recently aroused great interest as rich and exotic phenomena can emerge. Here, we report…
Correlation Effects in Quadrupole Insulators: a Quantum Monte Carlo Study
Chen Peng, Rong-Qiang He, Zhong-Yi Lu
The quadrupole insulator, a high-order topological insulator, with on-site Hubbard interaction is numerically studied by large-scale projector quantum Monte Carlo (PQMC) simulation…