We investigate the possibility of achieving high-temperature superconductivity in hydrides under pressure by inducing metallization of otherwise insulating phases through doping, a path previously used to render standard semiconductors superconducting at ambient pressure. Following this idea, we study H2O, one of the most abundant and well-studied substances, we identify nitrogen as the most likely and promising substitution/dopant. We show that for realistic levels of doping of a few percent, the phase X of ice becomes superconducting with a critical temperature of about 60 K at 150 GPa. In view of the vast number of hydrides that are strongly covalent bonded, but that remain insulating up to rather large pressures, our results open a series of new possibilities in the quest for novel high-temperature superconductors.
Emergence of superconductivity in doped H2O ice at high pressure
J. A. Flores-Livas,A. Sanna,Miglė Graužinytė,A. Davydov,S. Goedecker,M. Marques
Published 2016 in Scientific Reports
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- Publication year
2016
- Venue
Scientific Reports
- Publication date
2016-10-13
- Fields of study
Materials Science, Physics, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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