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astro-ph.EP2026
Incompatibility of iron in post-perovskite and the stability of basal magma oceans in super-Earths
Francis Dragulet, Lars Stixrude
Post-perovskite is expected to dominate much of the solid mantles of rocky exoplanets, yet iron partitioning between post-perovskite and silicate melt, which controls the compositi…
astro-ph.EP2026
An Equation of State for Supercritical Silicate-Hydrogen Mixtures at Sub-Neptune Interior Conditions
Sarah P. Marcum, Lars Stixrude, Edward D. Young
Many sub-Neptunes are expected to contain long-lived molten silicate interiors beneath dense H2-rich envelopes. At pressures and temperatures near the atmosphere-interior boundary,…
physics.geo-ph2026
Metal Saturation and the Redistribution of Hydrogen in Earth's Mantle
Junjie Dong, Lars P Stixrude, Paul D Asimow +1
Iron disproportionation reactions in mantle silicates can produce metallic iron that drives Earth's deep mantle toward metal saturation under reduced conditions. Subducting slabs t…