From the article: "...hydrogen sulfide under a pressure of 1.5 million atmospheres exhibits phonon-mediated superconductivity at 203 K".
So, yes, dry-ice level temperature, but incredibly high pressure.
So, yes, dry-ice level temperature, but incredibly high pressure.
High-temperature superconductors exhibit that effect in temperature 90-130K.
Having all that, 200K is really close to room temperature.
https://en.wikipedia.org/wiki/High-temperature_superconducti...