Maurits W. Haverkort

TL;DR: Using soft x-ray absorption spectroscopy and magnetic circular dichroism at the Co-L(2,3) edge, the spin state transition in LaCoO3 can be well described by a low-spin ground state and a triply degenerate high-spin first excited state as mentioned in this paper.

TL;DR: Using soft x-ray absorption spectroscopy and magnetic circular dichroism at the Co$L 2,3 ) edge, the spin state transition in LaCoO$3}$ can be well described by a low-spin ground state and a triply-degenerate high-spin first excited state.

TL;DR: In this article, the case for magnetically mediated superconductivity was strengthened by the discovery of high-energy magnetic excitations that are not affected by chemical doping levels within several cuprates.

TL;DR: These results strongly suggest that, in going from the metallic to the insulating state, the orbital occupation changes in a manner that charge fluctuations and effective bandwidths are reduced, that the system becomes more one dimensional and more susceptible to a Peierls-like transition.

TL;DR: In this article, the authors demonstrate how ab initio cluster calculations including the full Coulomb vertex can be done in the basis of localized Wannier orbitals which describe the low-energy density functional (local-density approximation) band structure of an infinite crystal, e.g., the transition-metal $3d$ and oxygen $2p$ orbitals.