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Soviet and US groups seek hydrogen’s metallic phase

MAR 01, 1973

DOI: 10.1063/1.3127978

A group of Russian experimenters has recently reported (ZhETF Pis. Red. 5, 286, 1972) that they may have produced metallic hydrogen at a pressure of 2.8 megabars; at the transition the density changed from 1.08 to 1.3 g/cm3. Last year a Livermore group reported on an apparently similar experiment in which they observed a pressure—volume point centered at 2 megabars and 1 cm3/g. Some people have predicted that metallic hydrogen might be metastable, and others that it would be a room‐temperature superconductor.

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