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Stabilization of hexazine rings in potassium polynitride at high pressure
Yu Wang, Maxim Bykov, Elena Bykova +6
Polynitrogen molecules represent the ultimate high energy-density materials as they have a huge potential chemical energy originating from their high enthalpy. However, synthesis a…
High-pressure structural study of a-Mn: solving a three decades-old mystery
Logan K. Magad-Weiss, Adebayo A. Adeleke, Eran Greenberg +3
Manganese, in the a-Mn structure, has been studied using synchrotron powder x-ray diffraction in a diamond anvil cell up to 220 GPa at room temperature combined with density functi…
A latent heat method to detect melting and freezing of metals at megabar pressures
Zachary M. Geballe, Nicholas Holtgrewe, Amol Karandikar +3
The high-pressure melting curves of metals provide simple and useful tests for theories of melting, as well as important constraints for the modeling of planetary interiors. Here,…
Novel hydrogen clathrate hydrate
Yu Wang, Konstantin Glazyrin, Valery Roizen +8
We report a new hydrogen clathrate hydrate synthesized at 1.2 GPa and 298 K documented by single-crystal X-ray diffraction, Raman spectroscopy, and first-principles calculations. T…
Oxidation of the Interiors of Carbide Exoplanets
H. Allen-Sutter, E. Garhart, K. Leinenweber +3
Astrophysical measurements have shown that some stars have sufficiently high carbon-to-oxygen ratios such that the planets they host would be mainly composed of carbides instead of…
Reconciliation of experiments and theory on transport properties of iron and the geodynamo
Zhang Youjun, Hou Mingqiang, Liu Guangtao +6
The amount of heat transport from the core, which constrains the dynamics and thermal evolution of the region, depends on the transport properties of iron. Ohta et al.(2016) and Ko…