Comment asserts that claimed metallic hydrogen at 425 GPa provides no new evidence of the insulator-metal transition and prior studies already reported comparable results.
In 2017 Dias and Silvera observed atomic metallic hydrogen at 495 GPa in the temperature range 5.5-83 K [5]
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Comment on: Observation of a first order phase transition to metal hydrogen near 425 GPa
Comment asserts that claimed metallic hydrogen at 425 GPa provides no new evidence of the insulator-metal transition and prior studies already reported comparable results.