Electronic structure of ladder cuprates

Electronic Structure and Exchange Integrals of Low-dimensional Cuprates

Pressure dependence of superconductivity in doped two-leg ladder cuprates

Within the kinetic energy driven superconducting mechanism, the effect of the pressure on superconductivity in the doped two-leg ladder cuprates is studied. It is shown that the superconducting transition temperature in the doped two-leg ladder cuprate superconductors increases with increasing pressure in the underpressure regime, and reaches a maximum in the optimal pressure, then decreases in...

Doping evolution of the electronic structure in the single-layer cuprates Bi2Sr2−xLaxCuO6+δ: Comparison with other single-layer cuprates

We have performed angle-resolved photoemission and core-level x-ray photoemission studies of the single-layer cuprate Bi2Sr2−xLaxCuO6+δ (Bi2201) and revealed the doping evolution of the electronic structure from the lightly-doped to optimally-doped regions. We have observed the formation of the dispersive quasi-particle band, evolution of the Fermi “arc” into the Fermi surface and the shift of ...

Effects of Excess or Deficiency of Oxygen Content on the Electronic Structure of High-Tc Cuprates

Band structure calculations are presented for large supercells of Ba2CuO4 (BCO) with O-vacancies in planar or apical positions, and of superoxygenated La2CuO4 (LCO) with oxygen interstitials in the La2O2 layers. It is found that apical oxygen vacancies in BCO act as electron dopants and makes the electronic structure similar to that of hole doped LCO. Excess oxygen interstitials forming wires i...

From Mott insulator to overdoped superconductor: Evolution of the electronic structure of cuprates studied by ARPES

We review our angle-resolved photoemission spectroscopy (ARPES) results on different layered oxide superconductors, and on their insulating parent compounds. The low energy excitations are discussed with emphasis on some of the most recent issues, such as the Fermi surface and remnant Fermi surface, the pseudogap and d-wave-like dispersion, and lastly the signatures in the ARPES spectra of mult...