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Efficient Up-Conversion in CsPbBr3 Nanocrystals via Phonon-Driven Exciton-Polaron Formation
Abdullah S. Abbas, Beiye C. Li, Richard D. Schaller +4
Lead halide perovskite nanocrystals demonstrate efficient up-conversion, although the precise mechanism remains a subject of active research. This study utilizes steady-state and t…
Superconductivity above 180 K in Ca-Mg Ternary Superhydrides at Megabar Pressures
Weizhao Cai, Vasily S. Minkov, Ying Sun +8
The discovery of high-temperature superconductivity above 240 K in binary La-H and Y-H systems inspired further predictions of even higher transition temperatures in compounds such…
High-pressure Phase Transition of Olivine-type MgGeO to a Metastable Forsterite-III type Structure and their Equation of States
R. V. Divya, G. Kumar, R. E. Cohen +5
Germanates are often used as structural analogs of planetary silicates. We have explored the high-pressure phase relations in MgGeO using diamond anvil cell experiments com…
Assessing the stability fields of molecular and polymeric CO2
Alexander F. Goncharov, Elena Bykova, Maxim Bykov +4
We investigated the stability of polymeric CO2 over a wide range of pressures, temperatures, and chemical environments. We find that the I-42d polymeric structure, consisting of a…
Phase transition kinetics revealed by in situ X-ray diffraction in laser-heated dynamic diamond anvil cells
Matthew Ricks, Arianna E. Gleason, Francesca Miozzi +7
We report on a novel approach to dynamic compression of materials that bridges the gap between previous static- and dynamic- compression techniques, allowing to explore a wide rang…
Structural evolution of iodine on approach to the monatomic state
Elena Bykova, Iskander G. Batyrev, Maxim Bykov +4
We applied single-crystal X-ray diffraction and Raman spectroscopy in a diamond anvil cell up to 36 GPa and first principles theoretical calculations to study the molecular dissoci…