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RPA Analysis of a Two-orbital Model for the BiS2-based Superconductors
George Martins, Adriana Moreo, Elbio Dagotto
The random-phase approximation (RPA) is here applied to a two-orbital model for the BiS2-based superconductors that was recently proposed by Usui et al., arXiv:1207.3888. Varying t…
Magnetic and Orbital Order in (MnO)/(MnO) Superlattices Studied via a Double-Exchange Model with Strain
Shuai Dong, Qinfang Zhang, Seiji Yunoki +2
The two-orbital double-exchange model is employed for the study of the magnetic and orbital orders in (MnO)/(MnO) (: rare earths; : alkaline earths)…
Magnetism and its microscopic origin in iron-based high-temperature superconductors
Pengcheng Dai, Jiangping Hu, Elbio Dagotto
High-temperature superconductivity in the iron-based materials emerges from, or sometimes coexists with, their metallic or insulating parent compound states. This is surprising sin…
Dynamics of doublon-holon pairs in Hubbard two-leg ladders
Luis G. G. V. Dias da Silva, Gonzalo Alvarez, Elbio Dagotto
The dynamics of holon-doublon pairs is studied in Hubbard two-leg ladders using the time-dependent Density Matrix Renormalization Group method. We find that the geometry of the two…