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4 papers · 1 filter
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…
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…
The same superconducting criticality for underdoped and overdoped La_{2-x}Sr_xCuO_4 single crystals
H. H. Wen, X. H. Chen, W. L. Yang +1
By measuring the superconducting diamagnetic moments for an underdoped and an overdoped La_{2-x}Sr_xCuO_4 single crystal with equal qualities and roughly equal transition temperatu…