Two hydrogen-rich materials, H 3 S and LaH 10, synthesized at megabar pressures, have
revolutionized the field of condensed matter physics providing the first glimpse to the …

Pressure has long been recognized as a fundamental thermodynamic variable but its
application was previously limited by the available pressure vessels and probes. The …

Water's phase diagram displays enormous complexity with currently 17 experimentally
confirmed polymorphs of ice and several more predicted computationally. For almost 120 …

Water-rich regions in Earth's deeper mantle are suspected to play a key role in the global
water budget and the mobility of heat-generating elements. We show that ice-VII occurs as …

In stark contrast to common ice, I h, water ice at planetary interior conditions has been
predicted to become superionic with fast-diffusing (that is, liquid-like) hydrogen ions moving …

The quantum nature of the proton can crucially affect the structural and physical properties of
hydrogen compounds. For example, in the high-pressure phases, of H2O, quantum proton …

The notion of asymmetrical Hydrogen Bond (O: HO) Cooperativity and Polarizability (HBCP)
has enabled exploration of the core physics behind irregularities of water and ice …

In the phase diagram of water, superionic ices with highly mobile protons within the stable
oxygen sublattice have been predicted at high pressures. However, the existence of …

The phase diagrams of water and ammonia were determined by constant pressure ab initio
molecular dynamic simulations at pressures (30 to 300 gigapascal) and temperatures (300 …

The microscopic structure of ice poses a long-standing challenge to theory,,. Because of
their low mass, the protons in the hydrogen bonds that define the structures of crystalline ice …