Superconducting materials have made new breakthroughs! Scientists in China have discovered new superconducting materials, leading the world in technology.

　　Recently, the news that South Korea discovered room-temperature superconducting materials has attracted global attention, and people have become interested in superconducting materials. Even the capital market has recently set off a storm because of superconducting materials. For example, the share price of American Superconductor Company soared by 150% because American scientists claimed that room temperature superconductivity had been discovered. In China, the share price of listed company Western Superconductor has also risen rapidly because of speculation.

　　Nowadays, there is still no news in the world to prove that the room temperature superconducting materials discovered in South Korea are true or false, but most of the news points to the false side. At the same time, what most people don't notice is that in fact, our country has made a real new breakthrough in superconducting materials in the near future, and it is a brand-new superconducting material first discovered in the world, and its technology is leading the world. The name of this superconducting material is La3Ni2O7.

　　La3Ni2O7 is a new single crystal sample of high-temperature superconducting material discovered by Professor Wang Meng from the laboratory of Zheshengtang School of Physics, South Campus of Sun Yat-sen University. It is the first nickel oxide superconductor discovered in the world at present.

　　However, according to Professor Wang Meng, the growth conditions of La3Ni2O7 are extremely harsh. Its average valence state is positive 2.5, which deviates from the stable valence state of Ni, and its oxygen pressure range is narrow.

　　Unless they are scientists engaged in scientific research, we ordinary people don't understand what these technical terms mean. However, what we need to understand is that no matter how boasting about room temperature superconductivity in the world now, it is actually boasting at all and it is all false.

　　Up to now, the superconducting material that can really be used in real life in China is actually the copper oxide superconducting material discovered by scientists in 1986. After that, scientists in China raised the superconducting temperature of copper oxide superconducting materials to the liquid nitrogen temperature range, which enabled them to be used in the fields of transportation, electric power and scientific instruments.

　　It is worth mentioning that we must pay attention to the word liquid nitrogen here. The reason why scientists have to take pains to raise superconducting materials to the temperature range of liquid nitrogen is because liquid nitrogen is cheap and easy to obtain. In this way, this kind of superconducting material can be applied on a large scale, which is the real superconducting material.

　　Looking back, La3Ni2O7 is actually the second superconducting material discovered by scientists in recent 37 years, which can be raised to the temperature range of liquid nitrogen. Superconducting materials are so difficult to find because there is no direction to look for in the field of superconductivity.

　　Moreover, through the study of copper oxide superconducting materials, scientists found that the laws and experimental phenomena on copper oxide superconducting materials could not be determined with other superconducting materials. In short, in the case of superconducting materials, in fact, scientists are completely blind and can only keep trying and making mistakes.

　　This time, scientists in China discovered the superconducting nickel oxide La3Ni2O7 in the liquid nitrogen temperature range, which means that we have opened up a new field for the research of superconducting materials in the world and led a new direction for the research of superconducting materials. At the same time, it is not difficult to imagine that La3Ni2O7 will be popularized in various fields in the future. By that time, I believe that power transmission will be faster, the speed of maglev train will be faster and faster, and the speed of scientific and technological development in China will be greatly improved.

　　Naturally, this is only an idea. After all, the growth rate of La3Ni2O7 is too harsh, which is doomed to be unable to be widely used in a short time. According to Professor Wang Meng, the nickel oxide La3Ni2O7 will be mainly used to cross with cutting-edge technologies such as AI technology and computers, so as to find more high-temperature superconducting materials that can help scientists find more and easier to apply, and thus achieve wider applications.

　　In addition, copper oxide superconducting materials used in all walks of life have achieved normal superconductivity under normal pressure, while nickel oxide La3Ni2O7 can only achieve superconductivity under the pressure of 14GPa. At present, Professor Wang Meng's team is tackling key problems, trying to realize normal superconductivity of nickel oxide La3Ni2O7 at room temperature.

　　Although the road to superconductivity is difficult and there is no technology to rely on, our scientists are still working tirelessly. I sincerely hope that scientists can find room temperature superconducting materials quickly and help China's comprehensive strength, by going up one flight of stairs.