40 citations · 217 across the 24 of their papers we have counts for
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Anomalous Orbital Reconstruction Controlled by Interorbital Correlations and Hund's Coupling
Yu Ni, Lvjin Wang, Jinfeng Wang +3
The microscopic origin of anomalous orbital polarization in a class of low-dimensional correlated oxides remains unresolved due to the competition among crystal-field effects, elec…
Local Spin Excitations Mediate Quasiparticle Breakdown in the Orbital-Selective Mott Phase
Yuekun Niu, Yu Ni, Jia-Ming Wang +3
The orbital-selective Mott phase (OSMP) is commonly described as a coexistence of localized and itinerant electrons within effectively decoupled orbitals, but emerging evidence for…
Evolution between two orbital-selective Mott phases driven by interorbital hopping
Yu Ni, Jian Sun, Ya-Min Quan +1
The effect of interorbital hopping on the orbital selective Mottness in a two-band correlation system is investigated by using the dynamical mean-field theory with the Lanczos meth…
Quantitative Determination of the Critical Points of Mott Metal-Insulator Transition in Strongly Correlated Systems
Yuekun Niu, Yu Ni, Jianli Wang +4
Mottness is at the heart of the essential physics in a strongly correlated system as many novel quantum phenomena occur in the metallic phase near the Mott metal-insulator transiti…
Electronic correlation-driven orbital polarization transitions in the orbital-selective Mott compound BaCuO
Yu Ni, Ya-Min Quan, Jingyi Liu +2
The electronic states near the Fermi level of recently discovered superconductor BaCuO consist primarily of the Cu and orbitals. We investi…
A dynamical mean-field study of orbital-selective Mott phase enhanced by next-nearest neighbor hopping
Yuekun Niu, Jian Sun, Yu Ni +1
The dynamical mean-field theory is employed to study the orbital-selective Mott transition (OSMT) of the two-orbital Hubbard model with nearest neighbor hopping and next-nearest ne…
Doublon-holon excitations split by Hund's rule coupling within the orbital-selective Mott phase
Yuekun Niu, Jian Sun, Yu Ni +3
Multiorbital interactions have the capacity to produce an interesting kind of doublon-holon bound state that consists of a single-hole state in one band and a doubly-occupied state…
Orbital-selective Mott phase of Cu-substituted iron-based Superconductors
Yang Liu, Yang-Yang Zhao, Yun Song
We study the phase transition in Cu-substituted iron-based superconductors with a new developed real-space Green's function method. We find that Cu substitution has strong effect o…
Electronic band gaps and transport properties in aperiodic bilayer graphene superlattices of Thue-Morse sequence
Changan Li, Hemeng Cheng, Ruofan Chen +4
We investigate electronic band structure and transport properties in bilayer graphene superlattices of Thue-Morse sequence. It is interesting to find that the zero- gap ce…
Effects of Strong Correlations on the Zero Bias Anomaly in the Extended Hubbard Model with Disorder
Yun Song, S. Bulut, R. Wortis +1
We study the effect of strong correlations on the zero bias anomaly (ZBA) in disordered interacting systems. We focus on the two-dimensional extended Anderson-Hubbard model, which…
The geometrically-averaged density of states calculated from the local Green's function as a measure of localization
R. Wortis, Yun Song, W. A. Atkinson
With the goal of measuring localization in disordered interacting systems, we examine the finite-size scaling of the geometrically-averaged density of states calculated from the lo…
Two-orbital Systems with Crystal Field Splitting and Interorbital Hopping
Yun Song, Liang-Jian Zou
The nondegenerate two-orbital Hubbard model is studied within the dynamic mean-field theory to reveal the influence of two important factors, i.e. crystal field splitting and inter…
The geometrically-averaged density of states as a measure of localization
Yun Song, W. A. Atkinson, R. Wortis
Motivated by current interest in disordered systems of interacting electrons, the effectiveness of the geometrically averaged density of states, , as an order parameter for…
Effects of interorbital hopping on orbital fluctuations and metal-insulator transitions: Extended linearized dynamical mean-field theory
Yun Song, Liang-Jian Zou
We study the effects of interorbital hopping on orbital fluctuations and Mott-Hubbard metal-insulator transition (MIT) in the two-orbital Hubbard model within the extended lineariz…
Schwinger-Boson Mean-Field Theory of Mixed-Spin Antiferromagnet
Yun Song, Shiping Feng
The Schwinger-boson mean-field theory is used to study the three-dimensional antiferromagnetic ordering and excitations in compounds , a large family of quasi-one-dimen…
Optical and transport properties in doped two-leg ladder antiferromagnet
Jihong Qin, Yun Song, Shiping Feng +1
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 an…
The Double-Time Green's Function Approach to the Two-Dimensional Heisenberg Antiferromagnet with Broken Bonds
Yun Song, H. Q. Lin, Jue-Lian Shen
We improved the decoupling approximation of the double-time Green's function theory, and applied it to study the spin- two-dimensional antiferromagnetic Heisenberg mode…