We present the formation of cupratelike electronic structures in KAgF3-related superlattices resulted from the confinement together with structural chemical modification by using the generalized gradient approximation augmented with maximally localized Wannier functions analysis. Strong antiferromagnetic coupling found in bulk KAgF3 is held in purely-fluoride KZnF3/KAgF3. Under 4% in-plane comp...

Interfacial superconductivity has manifested itself in various types of heterostructures: band insulator-band insulator, insulator-Mott and Mott insulator-metal. We report the observation high-temperature (HTS) a complementary long expected type heterostructures, which consists two insulators, La2CuO4 (LCO) PrBa2Cu3O7 (PBCO). By carefully controlling oxidization condition selectively doping CuO...

A semiconductive oxide, La2CuO4 (LCO), was investigated as a potential material to compose photocathode for sunlight-driven hydrogen evolution by splitting water. LCO, despite involving partially filled Cu 3d orbitals, behaves semiconductor and absorbs visible light on the bandgap formed significant Coulomb repulsion between electronic orbitals. An epitaxial LCO film grown SrRuO3/SrTiO3 (SRO/ST...

Doping a "parent" antiferromagnetic Mott insulator in cuprates leads to short-range electronic correlations and eventually to high-Tc superconductivity. However, the nature of charge correlations in the lightly doped cuprates remains unclear. Understanding the intermediate electronic phase in the phase diagram (between the parent insulator and the high-Tc superconductor) is expected to elucidat...

In this paper we review recent results on the preliminary applications of the new-found extended global SO(3) × SO(3) × U(1) symmetry of the Hubbard model on a bipartite lattice. Our results refer to the particular case of the bipartite square lattice. Specifically, we review a general description for such a model with nearest-neighbor transfer integral t and on-site repulsion U on a square lat...