Superconductivity at a record high temperature
The journal "Nature" published a publication by a team of scientists about the fact that they managed to get one Superconductor to get that at room temperature works, maybe a little cooler than room temperature, because 14,5 degrees Celsius. The catch is that the material in which this phenomenon has been demonstrated has to be pressed to 2,6 million atmospheres. But just achieving superconductivity at such a high temperature is a great achievement.
The basis of the material created by the researchers is hydrogen, which at high pressure turns into a metal and then into a superconductor. Three years ago, Ranga P. Dias and Isaac Silvera, both from Harvard, reported that they had created a long-awaited metallic form of hydrogen. But working with hydrogen alone is very difficult. Scientists have started the search. Five years ago, a work appeared that showed hydrogen sulfide as a promising superconductor at high temperatures and under enormous pressure. Then lanthanum hydride broke the record for high temperature superconductivity.
A University of Rochester team, led by Dias, began studying a mixture of hydrogen, sulfur and carbon. The tested materials were pressed in a diamond anvil at pressures similar to those of the earth's core. Eventually they managed to get a mix with a record breaking high temperature superconductivity. Of course, this superconductor is not practical at such high pressure, but scientists believe that it will gradually reduce the pressure while maintaining high temperature and superconductivity. "Ultimately, we want to bring the pressure to ambient pressure," predicts Professor Dias.