Hydrogen Dominant Metallic Alloys: High Temperature Superconductors?

N. W. Ashcroft

doi:10.1103/PhysRevLett.92.187002

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Hydrogen Dominant Metallic Alloys: High Temperature Superconductors?

N. W. Ashcroft

DOI 10.1103/PhysRevLett.92.187002 · Physical Review Letters

T1

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Abstract

The arguments suggesting that metallic hydrogen, either as a monatomic or paired metal, should be a candidate for high temperature superconductivity are shown to apply with comparable weight to alloys of metallic hydrogen where hydrogen is a dominant constituent, for example, in the dense group IVa hydrides. The attainment of metallic states should be well within current capabilities of diamond anvil cells, but at pressures considerably lower than may be necessary for hydrogen.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Li Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	15	Pressure not reported	unknown
MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown