According to foreign media reports, no matter how good a material is in electrical conductivity, however, there will be some resistance anyway-unless it is a superconducting material. Now, researchers from Max Planck have reported a new record of superconductivity at a high temperature of minus 23 degrees Celsius. Normally, when electrons flow through a conductor, their negative charge means that they repel each other. This means that a lot of energy is wasted. In this case, we can feel the heat emitted from the electronic equipment. But this is not always the case. Superconductors allow electrons to flow without any resistance, and this is very helpful for improving circuits and storage. Unfortunately, it is now necessary to cool the superconductor to an extremely low temperature-usually below -234 ° C. Ideally, they can work at room temperature, but the best condition achieved so far is that they can only reach -70 ℃. This new study was carried out by researchers with previous record holders. Now they have successfully heated the superconductor to -23 ° C, which is another big step towards room temperature. In order to do this, the research team put metal lanthanum and hydrogen into a pressure chamber, and then squeezed the sample violently-1.7 million times stronger than ordinary atmospheric pressure, and thus produced a type called lanthanum hydride (LaH10). After the researchers cooled the material, they found that at a relatively high temperature of -23 ° C, the resistance dropped to zero. This finding is supported by external magnetic field measurements. Next, the research team will conduct this experiment with other materials such as yttrium hydride, which can achieve superconductivity at higher temperatures. Related research reports have been published in "Nature".
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