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8 papers · 2 filters
Dynamical spin response of electron doped Mott insulators on a triangular lattice
Bin Liu, Ying Liang
The spin dynamics of electron doped Mott insulators on a triangular lattice is studied based on the model. It is found that the particularly universal behaviors of integrated…
Superconductivity and magnetic fluctuations in electron-doped cobaltate superconductors
Ying Liang, Bin Liu
We study the interplay between superconductivity and antiferromagnetic spin fluctuations in electron-doped cobaltate NaCoOHO based on the kinetic energy dr…
Low-energy effective theory and two distinct critical phases in a spin-1/2 frustrated three-leg spin tube
Yang Zhao, Shou-Shu Gong, Yong-Jun Wang +1
Motivated by the crystal structures of [(CuCl2tachH)3Cl]Cl2 and Ca3Co2O6, we develop a low-energy effective theory using the bosonization technique for a spin-1/2 frustrated three-…
Topological edge states in spin 1 bilinear-biquadratic model
Peng Li, Su-Peng Kou
The spin 1 bilinear-biquadratic model on square lattice in the region is studied in a fermion representation with a p-wave pairing BCS type mean-field theory. Our results…
Majorana Edge States for Z2 Topological Orders of the Wen-plaquette Model and the Toric-code Model
Jing Yu, Xing-Hai Zhang, Su-Peng Kou
In this paper we study the symmetry protected Majorana edge states for the Z2 topological order of the Wen-plaquette model and the toric-code model and calculate the dispersion of…
Quantum Monte Carlo Study of Pairing Symmetry and Correlation in Iron-based Superconductors
Tianxing Ma, Hai-Qing Lin, Jiangping Hu
We perform a systematic quantum Monte Carlo study of the pairing correlation in the symmetric microscopic model for iron-based superconductors. It is found that the pairing w…