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Bulk and Surface Nanoscale Hole Density Inhomogeneity in HgBaCuO and BiSrCaCuO Cuprates
Wei Chen, Oleg P. Sushkov, Giniyat Khaliullin
It is well established that the hole density in the prototypical superconductor LaSrCuO is very inhomogeneous due to Sr-dopant induced disorder. On the other hand,…
Resonant Inelastic X-ray Scattering on Spin-Orbit Coupled Insulating Iridates
Luuk J. P. Ament, Giniyat Khaliullin, Jeroen van den Brink
We determine how the elementary excitations of iridium-oxide materials, which are dominated by a strong relativistic spin-orbit coupling, appear in Resonant Inelastic X-ray Scatter…
Enhanced Pairing Correlations near Oxygen Dopants in Cuprate Superconductors
Giniyat Khaliullin, Michiyasu Mori, Takami Tohyama +1
Recent experiments on Bi-based cuprate superconductors have revealed an unexpected enhancement of the pairing correlations near the interstitial oxygen dopant ions. Here we propose…
Orbital order and possible superconductivity in LaNiO3/LaMO3 superlattices
Jiri Chaloupka, Giniyat Khaliullin
A hypothetical layered oxide La_2NiMO_6 where NiO_2 and MO_2 planes alternate along the c-axis of ABO_3 perovskite lattice is considered theoretically. Here, M denotes a trivalent…
Kitaev-Heisenberg Model on Honeycomb Lattice: Possible Exotic Phases in Iridium Oxides IrO
Jiri Chaloupka, George Jackeli, Giniyat Khaliullin
We derive and study a spin one-half Hamiltonian on a honeycomb lattice describing the exchange interactions between Ir ions in a family of layered iridates IrO (…