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Emergence of superconductivity in doped H2O ice at high pressure

MPG-Autoren
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Sanna,  Antonio
Max Planck Institute of Microstructure Physics, Max Planck Society;

Externe Ressourcen

https://doi.org/10.1038/s41598-017-07145-4
(Verlagsversion)

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s41598-017-07145-4.pdf
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Zitation

Flores Livas, J. A., Sanna, A., Graužinytė, M., Davydov, A., Goedecker, S., & Marques, M. A. L. (2017). Emergence of superconductivity in doped H2O ice at high pressure. Scientific Reports, 7: 6825. doi:10.1038/s41598-017-07145-4.


Zitierlink: https://hdl.handle.net/21.11116/0000-0008-99A3-3
Zusammenfassung
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.