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6 papers · 2 filters
Normal-state pseudogap and electron flat dispersion in copper oxide materials
Feng Yuan, Shiping Feng
The anomalous momentum and doping dependence of the electron spectral function and electron dispersion for copper oxide materials in the underdoped regime are studied within the t-…
Effect of the additional second neighbor hopping on the spin dynamics in the t-J model
Xianglin Le, Feng Yuan, Shiping Feng
The effect of the additional second neighbor hopping t' on the spin dynamics in the t-J model is studied within the fermion-spin theory. Although the additional second neighbor hop…
Influence of the additional second neighbor hopping on the spin response in the t-J model
Xianglin Ke, Feng Yuan, Shiping Feng
The influence of the additional second neighbor hopping t' on the spin response of the t-J model in the underdoped and optimally doped regimes is studied within the fermion-spin th…
Momentum and doping dependence of the electron spectrum and (,0) feature in copper oxide materials
Feng Yuan, Xianglin Ke, Shiping Feng
The momentum and doping dependence of the electron spectrum of copper oxide materials in the underdoped regime is studied within the t-J model. It is shown that the pseudogap opens…
Charge dynamics in doped triangular antiferromagnets
W. Q. Yu, Shiping Feng, Z. B. Huang +1
Within the framework of the fermion-spin theory based on the charge-spin separation, the charge dynamics of the doped antiferromagnet on a triangular lattice is studied. The holon…
Pseudogap effects on the c-axis charge dynamics in copper oxide materials
Shiping Feng, Feng Yuan, Weiqiang Yu
The c-axis charge dynamics of copper oxide materials in the underdoped and optimally doped regimes has been studied by considering the incoherent interlayer hopping. It is shown th…