The phenomenon of superconductivity (or superconductivity) was discovered over 100 years ago and plays an important role in modern innovative technologies such as maglev and MRI internal scanning. However, in order to obtain this phenomenon, it is usually necessary to have an extremely low temperature of -140 ° C or less, which has the disadvantage of requiring expensive and strict equipment.
If this cryogenic temperature can be brought to room temperature, the above-mentioned applied technologies and transmission line networks without resistance loss will be realized, and it is possible that society will change drastically. Therefore, many researchers have been conducting research aiming at the realization of room temperature superconductivity, and in 2018, the realization of the generation of superconducting states in the region of -13 ° C, which is quite close to room temperature, was published in the scientific journal Nature. It was reported.
However, this time, a new study reported by researchers led by Professor Langa Diaz of the University of Rochester in the United States has found a “photochemically converted carbonaceous hydrogen sulfide system” that exhibits superconductivity at about 15 ° C in the normal temperature range. It states that it was created.
Researchers have conducted experiments with the goal of realizing room-temperature superconductors using materials mainly made of copper oxide and iron, but the most successful ones are commonplace. It was said that it used the element, hydrogen.
“We need stronger bonds and lighter elements to create room-temperature superconductors,” said Professor Diaz. “The lightest substance was hydrogen, and hydrogen bonds were one of the strongest bonds,” said hydrogen. I briefly stated the reason for choosing. However, very high pressure is required to give hydrogen metallic properties. Therefore, researchers have sought a superconducting alternative that is likely to contain hydrogen but can be made metallic at much lower pressures.