The anisotropy in the microwave conductivity of the ortho-II YBa$_2$Cu$_3$O$_{6.50}$ is studied within the kinetic energy driven superconducting mechanism. The ortho-II YBa$_2$Cu$_3$O$_{6.50}$ is...
Momentum dependence of quasiparticle spectrum and Bogoliubov angle in cuprate superconductors (2009)
Wang, Weifang, Wang, Zhi, Zhang, Jingge, Feng, Shiping
The momentum dependence of the low energy quasiparticle spectrum and the related Bogoliubov angle in cuprate superconductors are studied within the kinetic energy driven superconducting mechanism. By...
Meissner effect in cuprate superconductors (2009)
Krzyzosiak, Mateusz, Feng, Shiping, Gonczarek, Ryszard
Within the framework of the kinetic energy driven superconductivity, the Meissner effect in cuprate superconductors is studied in the linear response approach. The kernel of the response function is...
Cold-atoms on a two-dimensional square optical lattice with an alternating potential (2009)
Guo, Huaiming, Wen, Yuchuan, Feng, Shiping
The cold-atom on a two-dimensional square optical lattice is studied within the hard-core boson Hubbard model with an alternating potential. In terms of the quantum Monte Carlo method, it is shown...
The electronic structure of cuprate superconductors is studied within the kinetic energy driven superconducting mechanism in the presence of the out-of-plane impurities. With increasing the impurity...
Solitons and vortices in an evolving Bose-Einstein condensate (2008)
Yang, Shi-Jie, Wu, Quan-Sheng, Feng, Shiping, Wen, Yu-Chuan, Yu, Yue
Spatiotemporal evolution of a confined Bose-Einstein condensate is studied by numerically integrating the time-dependent Gross-Pitaevskii equation. Self-interference between the successively...
Magnetic field induced incommensurate resonance in cuprate superconductors (2008)
Zhang, Jingge, Cheng, Li, Guo, Huaiming, Feng, Shiping
The influence of a uniform external magnetic field on the dynamical spin response of cuprate superconductors in the superconducting state is studied based on the kinetic energy driven superconducting...
Wang, Zhi, Guo, Huaiming, Feng, Shiping
Within the framework of the kinetic energy driven superconducting mechanism, the effect of the extended impurity scatterers on the quasiparticle transport of cuprate superconductors in the...
Giant vortex and Skyrmion in a rotating two-species Bose-Einstein condensate (2007)
Yang, Shi-Jie, Wu, Quan-Sheng, Zhang, Sheng-Nan, Feng, Shiping
Numerical simulations are performed for a rotating two-species Bose condensate confined by a harmonic potential. The particle numbers of each species are unequal. When the rotational speed exceeds a...
Electronic structure of kinetic energy driven cuprate superconductors (2007)
Feng, Shiping, Guo, Huaiming, Lan, Yu, Cheng, Li
In this paper, we review the low energy electronic structure of the kinetic energy driven d-wave cuprate superconductors. We give a general description of the charge-spin separation fermion-spin...
The doping and energy evolution of the magnetic excitations of the electron-doped cuprate superconductor Pr$_{0.88}$LaCe$_{0.12}$CuO$_{4-\delta}$ in the superconducting state is studied based on the...
Lan, Yu, Qin, Jihong, Feng, Shiping
Within the framework of the kinetic energy driven superconductivity, the electronic structure of bilayer cuprate superconductors in the superconducting state is studied. It is shown that the electron...
Electronic structure of the electron-doped cuprate superconductors (2007)
Cheng, Li, Guo, Huaiming, Feng, Shiping
Within the framework of the kinetic energy driven d-wave superconductivity, the electronic structure of the electron doped cuprate superconductors is studied. It is shown that although there is an...
Lan, Yu, Qin, Jihong, Feng, Shiping
Within the t-t'-J model, the electron spectrum and quasiparticle dispersion in doped bilayer cuprates in the normal state are discussed by considering the bilayer interaction. It is shown that the...
Pressure dependence of superconductivity in doped two-leg ladder cuprates (2006)
Qin, Jihong, Chen, Ting, Feng, Shiping
Within the kinetic energy driven superconducting mechanism, the effect of the pressure on superconductivity in doped two-leg ladder cuprates is studied. It is shown that the superconducting...
The fundamental role of superconducting quasiparticle coherence in cuprate superconductors (2006)
Within the kinetic energy driven superconducting mechanism, we study the interplay between superconductivity and the nodal and antinodal superconducting quasiparticle coherences in cuprate...
Superconductivity in doped two-leg ladder cuprates (2006)
Qin, Jihong, Yuan, Feng, Feng, Shiping
Within the t-J ladder model, superconductivity with a modified d-wave symmetry in doped two-leg ladder cuprates is investigated based on the kinetic energy driven superconducting mechanism. It is...
Theory of superconductivity in doped cuprates (2006)
Within the t-t'-J model, the physical properties of doped cuprates in the superconducting-state are discussed based on the kinetic energy driven superconducting mechanism. We show that the...
Electronic structure of kinetic energy driven superconductors (2006)
Within the framework of the kinetic energy driven superconductivity, we study the electronic structure of cuprate superconductors. It is shown that the spectral weight of the electron spectrum in the...
Heat transport of electron-doped Cobaltates (2006)
Liu, Bin, Liang, Ying, Feng, Shiping, Chen, Wei Yeu
Within the t-J model, the heat transport of electron-doped cobaltates is studied based on the fermion-spin theory. It is shown that the temperature dependent thermal conductivity is characterized by...
Periodicity of the giant vortex states in mesoscopic superconducting rings (2005)
Zhao, Hu, Yang, Shi-jie, Feng, Shiping
The giant vortex states of a multiply connected superconductor, with radius comparable to the penetration depth and the coherence length, are theoretically investigated based on the nonlinear...
Asymmetry of the electron spectrum in hole-doped and electron-doped cuprates (2005)
Within the t-t'-J model, the asymmetry of the electron spectrum and quasiparticle dispersion in hole-doped and electron-doped cuprates is discussed. It is shown that the quasiparticle dispersions of...
Within the kinetic energy driven superconducting mechanism, the effect of the additional second neighbor hopping t' on the superconducting state of the t-J model is discussed. It is shown that t'...
Superconductivity in Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O driven by the kinetic energy (2005)
Liu, Bin, Liang, Ying, Feng, Shiping
Within the charge-spin separation fermion-spin theory, the mechanism of superconductivity in Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O is studied. It is shown that dressed fermions interact occurring directly...
The charge asymmetry in superconductivity of hole- and electron-doped cuprates (2005)
Within the t-t'-J model, the charge asymmetry in superconductivity of hole- and electron-doped cuprates is studied based on the kinetic energy driven superconducting mechanism. It is shown that...
Ma, Tianxing, Guo, Huaiming, Feng, Shiping
Within the kinetic energy driven superconducting mechanism, the interplay between the single particle coherence and superconducting instability in doped cuprates is studied. The superconducting...
The magnetic nature of superconductivity in doped cuprates (2004)
Feng, Shiping, Ma, Tianxing, Guo, Huaiming
Within the kinetic energy driven superconducting mechanism, the magnetic nature of cuprate superconductors is discussed. It is shown that the superconducting state is controlled by both charge...
Qin, Jihong, Feng, Shiping, Yuan, Feng, Chen, Wei Yeu
Within the t-J model, the heat transport of the doped two-leg ladder material Sr$_{14-x}$Ca$_{x}$Cu$_{24}$O$_{41}$ is studied in the doped regime where superconductivity appears under pressure in low...
Liu, Bin, Liang, Ying, Feng, Shiping, Chen, Wei Yeu
Within the charge-spin separation fermion-spin theory, we have shown that the mechanism of superconductivity in the electron doped cobaltate Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O is ascribed to its...
Doping dependence of charge dynamics in electron-doped cuprates (2004)
Ma, Tianxing, Guo, Huaiming, Feng, Shiping
Within the t-t'-J model, the doping dependence of charge dynamics in electron-doped cuprates is studied. The conductivity spectrum shows a pseudogap structure with a low-energy peak appearing at...
Charge transport of electron doped Mott insulators on a triangular lattice (2003)
Liu, Bin, Liang, Ying, Feng, Shiping, Chen, Wei Yeu
The charge transport of electron doped Mott insulators on a triangular lattice is investigated within the t-J model based on the partial charge-spin separation fermion-spin theory. The conductivity...
Unusual heat transport in underdoped cuprates (2003)
Within the t-J model, the heat transport of the underdoped cuprates is studied based on the fermion-spin theory. It is shown that at low temperatures the energy dependence of the thermal conductivity...
Kinetic energy driven superconductivity in doped cuprates (2003)
Within the t-J model, the mechanism of superconductivity in doped cuprates is studied based on the partial charge-spin separation fermion-spin theory. It is shown that dressed holons interact...
Gauge invariant dressed holon and spinon in doped cuprates (2003)
Feng, Shiping, Ma, Tianxing, Qin, Jihong
We develop a partial charge-spin separation fermion-spin theory implemented the gauge invariant dressed holon and spinon. In this novel approach, the physical electron is decoupled as the gauge...
Charge transport in underdoped bilayer cuprates (2003)
Yuan, Feng, Qin, Jihong, Feng, Shiping, Chen, Wei Yeu
Within the t-J model, we study the charge transport in underdoped bilayer cuprates by considering the bilayer interaction. Although the bilayer interaction leads to the band splitting in the...
Unusual charge transport and spin response of doped bilayer triangular antiferromagnets (2003)
Liang, Ying, Ma, Tianxing, Feng, Shiping
Within the t-J model, the charge transport and spin response of the doped bilayer triangular antiferromagnet are studied by considering the bilayer interaction. Although the bilayer interaction leads...
Feng, Shiping, Qin, Jihong, Ma, Tianxing
A partial charge-spin separation fermion-spin theory is developed to study the normal-state properties of the underdoped cuprates. In this approach, the physical electron is decoupled as a gauge...
He, Jianhui, Feng, Shiping, Chen, Wei Yeu
The dynamical spin response of doped two-leg ladder antiferromagnets is investigated based on the fermion-spin approach. Our calculations clearly demonstrate a crossover from the incommensurate...
Schwinger-Boson Mean-Field Theory of Mixed-Spin Antiferromagnet $L_2BaNiO_5$ (2002)
The Schwinger-boson mean-field theory is used to study the three-dimensional antiferromagnetic ordering and excitations in compounds $L_2BaNiO_5$, a large family of quasi-one-dimensional mixed-spin...
Feng, Shiping, Yuan, Feng, Su, Zhao-Bin, Yu, Lu
The recently discovered coexistence of incommensurate antiferromagnetic neutron scattering peaks and commensurate resonance in underdoped YBa$_2$Cu$_3$O$_{6+x}$ is calling for an explanation. Within...
Pseudogap effects on the charge dynamics in the underdoped copper oxide materials (2002)
Within the t-J model, the charge dynamics of copper oxide materials in the underdoped regime is studied based on the fermion-spin theory. It is shown that both in-plane charge dynamics and c-axis...
Indications of incommensurate spin fluctuations in doped triangular antiferromagnets (2002)
The incommensurate spin fluctuation of the doped triangular antiferromagnet is studied within the t-J model. It is shown that the commensurate peak near the half-filling is split into six...
Effect of the additional second neighbor hopping on the charge dynamics in the t-J model (2002)
The effect of the additional second neighbor hopping t' on the charge dynamics of the t-J model in the underdoped regime is studied within the fermion-spin theory. The conductivity spectrum of the...
Optical and transport properties in doped two-leg ladder antiferromagnet (2002)
Qin, Jihong, Song, Yun, Feng, Shiping, Chen, Wei Yeu
Within the t-J model, the optical and transport properties of the doped two-leg ladder antiferromagnet are studied based on the fermion-spin theory. It is shown that the optical and transport...
Yuan, Feng, Feng, Shiping, Su, Zhao-Bin, Yu, Lu
The doping, temperature and energy dependence of the dynamical spin structure factors of the underdoped lanthanum cuprates in the normal state is studied within the t-J model using the fermion-spin...
Effect of the additional second neighbor hopping on the spin dynamics in the t-J model (2000)
Le, Xianglin, Yuan, Feng, Feng, Shiping
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 hopping t' is...
Normal-state pseudogap and electron flat dispersion in copper oxide materials (2000)
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-J model. It is...
Influence of the additional second neighbor hopping on the spin response in the t-J model (2000)
Ke, Xianglin, Yuan, Feng, Feng, Shiping
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 theory. Although the...
Yuan, Feng, Ke, Xianglin, Feng, Shiping
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 near ($\pi$,0)...
Charge dynamics in doped triangular antiferromagnets (2000)
Yu, W. Q., Feng, Shiping, Huang, Z. B., Lin, H. Q.
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 part is treated by...
Pseudogap effects on the c-axis charge dynamics in copper oxide materials (2000)
Feng, Shiping, Yuan, Feng, Yu, Weiqiang
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 that the c-axis...
Anomalous c-axis charge dynamics in copper oxide materials (1999)
Feng, Shiping, Yuan, F., Yu, W. Q., Zhang, P. P.
Within the t-J model, the c-axis charge dynamics of the copper oxide materials in the underdoped and optimally doped regimes is studied by considering the incoherent interlayer hopping. It is shown...
Electronic properties of the doped antiferromagnet on a kagome lattice (1999)
Within the t-J model, we study the electronic properties of the doped antiferromagnet on the kagome lattice based on the framework of the self-consistent mean-field theory. At the half-filling, the...
Within the fermion-spin theory, the physical properties of the electron pairing state in the copper oxide materials are discussed. According to the common form of the electron Cooper pair, it is...
Spin-Liquid State for Two-Dimensional Heisenberg Antiferromagnets on a Triangular Lattice (1998)
The spin liquid state of the antiferromagnetic Heisenberg model on a triangular lattice is studied within the self-consistent Green's function method. It is shown that the spin excitation spectra is...
Optical Conductivity in the Copper Oxide Materials (1998)
Huang, Zhongbing, Feng, Shiping
The frequency- and temperature-dependent optical conductivity of the copper oxide materials in the underdoped and optimal doped regimes are studied within the t-J model. The conductivity spectrum...
Spin Dynamics for the t-J Model (1998)
Huang, Zhongbing, Feng, Shiping
The spin dynamics at the finite temperature for the t-J model in the underdoped and optimal doped regimes is studied within the fermion-spin theory. It is shown that the dynamical spin structure...
Universal Spin Response in Copper Oxide Materials (1998)
Feng, Shiping, Huang, Zhongbing
The spin response in the copper oxide materials at finite temperatures in the underdoped and optimal doped regimes is studied within the framework of the fermion-spin theory. The integrated dynamical...
Theory of Photoemission from the Copper Oxide Material (1997)
A mean-field theory which satisfying the electron on-site local constraint in the relevant regime of density for the high temperature superconductors is developed. Within this approach, the electron...
Charge Dynamics from Copper Oxide Materials (1997)
Feng, Shiping, Huang, Zhongbing
The charge dynamics of the copper oxide materials in the underdoped and optimal doped regimes is studied within the framework of the fermion-spin theory. The conductivity spectrum shows the non-Drude...
Estimation of the Doping Dependence of Antiferromagnetism in the Copper Oxide Material (1997)
Feng, Shiping, Song, Yun, Huang, Zhongbing
Within the $t$-$J$ model, we study the doping dependence of antiferromagnetism in the copper oxide materials by considering quantum fluctuations of spinons in the random-phase-approximation. The...
Fermion-Spin Transformation to Implement the Charge-Spin Separation (1993)
Feng, Shiping, Su, Z. B., Yu, L.
A novel approach, the fermion-spin transformation to implement the charge-spin separation, is developed to study the low-dimensional $t$-$J$ model. In this approach, the charge and spin degrees of...
Feng, Shiping, Wu, J. B., Su, Z. B., Yu, L.
The electron momentum distribution function in the $t-J$ model is studied in the framework of slave particle approach. Within the decoupling scheme used in the gauge field and related theories, we...
Collapse analysis of reinforced concrete frames (1987)
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