Schematic phase diagram of SI ice from 50 GPa to 2.5 TPa. At 2,200 K, we find a reversible transition from the BCC-SI phase to a SI phase with the close-packed oxygen sublattice at [220 ...

The charge transfer of the nominal copper hole to planar oxygen sets the maximum critical temperature. A three-dimensional phase diagram in terms of the charge content at copper as well as oxygen ...

The structure of the red oxygen ε-phase formed under pressures above 10 GPa has been determined. • Discovery of an O 8 cluster, which is a new conformation of oxygen following ozone. The solid oxygen ...