Eremets et al. (arXiv:1812.01561, Nature 569, 528–531 (2019)) and Hemley et al. (arXiv1808.07695, PRL 122, 027001 (2019)) have reported new high-temperature record for superconductivity, as covered by MIT Tech Review and Physics Today. Not surprisingly in light of recent trends, the very high temperatures of 250 K and 260 K is only achieved at the very high pressures of 170 GPa and 200 GPa, respectively.
I have heard it said that, although record temperatures have been increasing, the temperature-pressure "possibility frontier" is basically unchanged. (See Production possibility frontier for the analogous economics concept.)
Question: Does anyone have a plot of the superconducting records for temperature vs. pressure?
Here are some plots of record temperature vs. time that contain some pressure information, which may allow someone to construct such a plot: 1, 2, 3, 4. I do not know if it's safe to assume that all records without an explicitly noted pressure were performed at atmospheric pressure. #3 is Wikipedia:
(I would also love to know what's responsible for this phenomenon -- previously asked here -- but I think a plot is a good first step.)
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