291 citations · 1.2k across the 40 of their papers we have counts for
7 papers · 1 filter
Dynamical nonlocal coherent-potential approximation for itinerant electron magnetism
D. A. Rowlands, Yu-Zhong Zhang
A dynamical generalisation of the nonlocal coherent-potential approximation is derived based upon the functional integral approach to the interacting electron problem. The free ene…
Orbital Selective Mott Transition Induced by Orbitals with Distinct Noninteracting Densities of States
Ze-Yi Song, Hunpyo Lee, Yu-Zhong Zhang
By applying dynamical mean-field theory in combination with exact diagonalization at zero temperature to a half-filled Hubbard model with two orbitals having distinct noninteractin…
Inclusion of intersite spatial correlations in the alloy analogy approach to the half-filled ionic Hubbard model
D. A. Rowlands, Yu-Zhong Zhang
Using the nonlocal coherent-potential approximation we study the effect of intersite spatial correlations on the transition from band insulator to metal as well as from metal to Mo…
Magnetism and Superconductivity in Iron-based Superconductors Decided by Condensed Particle-hole Excitations away from the Fermi Level
Ming-Cui Ding, Hai-Qing Lin, Yu-Zhong Zhang
The origin of magnetism and superconductivity in iron-based superconductors is still unclear. Here, by investigating the momentum-dependent particle-hole excitations which quantify…
Time-reversal-invariant topological superconductivity in n-doped BiH
Fan Yang, Cheng-Cheng Liu, Yu-Zhong Zhang +2
Intrinsic and symmetry protected topological states have attracted lots of interest in condensed matter physics recently. In particular, time reversal symmetry protected fermion to…
Orbital Selective Phase Transition
Yao Yao, Yu-Zhong Zhang, Hunpyo Lee +4
We review theoretical investigations on the origin of the orbital selective phase where localized and itinerant electrons coexist in the d shell at intermediate strength of the on-…
Disappearance of the Dirac cone in silicene due to the presence of an electric field
D. A. Rowlands, Yu-Zhong Zhang
Using the two-dimensional ionic Hubbard model as a simple basis for describing the electronic structure of silicene in the presence of an electric field induced by the substrate, w…