Metastability of Diamond Ramp-Compressed to 2 terapascals

作者: J. R. Rygg , D. Erskine , David McGonegle , Federica Coppari , Justin S Wark

DOI: 10.1038/S41586-020-03140-4

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摘要: Carbon is the fourth-most prevalent element in the Universe and essential for all known life. In the elemental form it is found in multiple allotropes, including graphite, diamond and fullerenes, and it has long been predicted that even more structures can exist at pressures greater than those at Earth's core–. Several phases have been predicted to exist in the multi-terapascal regime, which is important for accurate modelling of the interiors of carbon-rich exoplanets,. By compressing solid carbon to 2 terapascals (20 million atmospheres; more …

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