I know that hydrogen can behave as a conductor under high pressure (metallic hydrogen); however could helium behave similarly under high pressure? If so, could this have any potential benefits over metallic hydrogen?
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6$\begingroup$ It needs much higher pressure. In practice, no benefits for technology. $\endgroup$– Paul KolkCommented Apr 19 at 14:10
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4$\begingroup$ researchgate.net/publication/… journals.aps.org/prb/abstract/10.1103/PhysRevB.84.235109 $\endgroup$– MithoronCommented Apr 19 at 14:13
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4$\begingroup$ en.wikipedia.org/wiki/Metallization_pressure $\endgroup$– MithoronCommented Apr 19 at 14:25
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4$\begingroup$ @Mithoron those pressures are mere child's play for the Sun, whose core pressure appears to be over 300 GIGApascals. $\endgroup$– Oscar LanziCommented Apr 19 at 16:37
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4$\begingroup$ @OscarLanzi Gigabar, but yeah, not nearly as high. Even brown dwarf could have metallic He, I think. Sun's simply too hot, but one day it's gonna turn into degenerate matter. $\endgroup$– MithoronCommented Apr 19 at 18:11
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