662 citations · 3.7k across the 108 of their papers we have counts for
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Charge dynamics in the phase string model for high-Tc superconductors
Zheng-Cheng Gu, Zheng-Yu Weng
An understanding of the anomalous charge dynamics in the high-Tc cuprates is obtained based on a model study of doped Mott insulators. The high-temperature optical conductivity is…
Mutual Chern-Simons Theory of Spontaneous Vortex Phase
Xiao-Liang Qi, Zheng-Yu Weng
We apply the mutual Chern-Simons effective theory (Phys. Rev. B 71, 235102) of the doped Mott insulator to the study of the so-called spontaneous vortex phase in the low-temperatur…
Why a local moment induces an antiferromagnetic ordering: An RVB picture
Tao Li, Qiang-Hua Wang, Zheng-Yu Weng +2
Based on a Gutzwiller projected BCS wavefunction, it is shown that a local S=1/2 moment is present around a vacancy site (zinc impurity) in a form of staggered magnetic moments, wh…
Lower Pseudogap Phase: A Spin/Vortex Liquid State
Zheng-Yu Weng, Xiao-Liang Qi
The pseudogap phase is considered as a new state of matter in the phase string model of the doped Mott insulator, which is composed of two distinct regimes known as upper and lower…
Quantum Spin Hall Effect and Topologically Invariant Chern Numbers
D. N. Sheng, Z. Y. Weng, L. Sheng +1
We present a topological description of quantum spin Hall effect (QSHE) in a two-dimensional electron system on honeycomb lattice with both intrinsic and Rashba spin-orbit coupling…
Quantum Hall Effect of Dirac Fermions in Graphene: Disorder Effect and Phase Diagram
D. N. Sheng, L. Sheng, Z. Y. Weng
We numerically study the interplay of band structure, topological invariant and disorder effect in two-dimensional electron system of graphene in a magnetic field. Two \emph{distin…