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Superconductivity at 250 K in lanthanum hydride under high pressures
A. P. Drozdov, P. P. Kong, V. S. Minkov +11
The discovery of superconductivity at 203 K in H3S brought attention back to conventional superconductors whose properties can be described by the Bardeen-Cooper-Schrieffer (BCS) a…
Interplay between structural and magnetic-electronic responses of FeAlO to a megabar: site inversion and spin crossover
W. M. Xu, G. R. Hearne, S. Layek +4
X-ray diffraction pressure studies at room temperature demonstrate that the spinel FeAlO transforms to a tetragonal phase at ~18 GPa. This tetragonal phase has a highly…
Site-specific spin crossover in FeTiO post-spinel under high pressures to near a megabar
W. M. Xu, G. R. Hearne, S. Layek +5
X-ray diffraction studies to ~90 GPa at room temperature show that FeTiO ferrous inverse spinel undergoes the following sequence of structural transitions : cubic (Fd3m…
Helium-hydrogen immiscibility at high pressures
Yu Wang, Xiao Zhang, Shuqing Jiang +6
Hydrogen and helium are the most abundant elements in the universe and they constitute the interiors of gas giant planets. Thus, their equations of states, phase, chemical state, a…
Synthesis of clathrate cerium superhydride CeH9 below 100 GPa with atomic hydrogen sublattice
Nilesh P. Salke, M. Mahdi Davari Esfahani, Youjun Zhang +7
Hydrogen-rich superhydrides are believed to be very promising high-Tc superconductors as they are expected to mimic characteristics of metallic hydrogen. Recent experiments discove…
Anharmonicity-induced isostructural phase transition of Zirconium under pressure
Elissaios Stavrou, Lin H. Yang, Per Soderlind +8
We have performed a detailed x-ray diffraction structural study of Zr under pressure and unambiguously identify the existence of a first-order isostructural bcc-to-bcc phase transi…