CCTV News: my country has made new breakthroughs in superconducting research. A research team composed of Southern University of Science and Technology, the Quantum Science Center of the Guangdong-Hong Kong-Macao Greater Bay Area and Tsinghua University recently made a major breakthrough in the field of high-temperature superconducting. This discovery makes nickel-based materials the third category to achieve super-super under normal pressure. The guiding material system provides a new breakthrough for solving the century-old scientific problems of high-temperature superconducting mechanism. The result was published in the top international academic journal Nature on the 18th Beijing time.

The material in front of me that is breathing and running on the orbit is a high-temperature superconductor. Superconducting is a physical phenomenon in which a material has zero resistance and is completely resistant to magnetic properties when the temperature drops below a certain critical value. It has huge application potential in many high-tech fields.

Generally speaking, many materials need to achieve superconductivity below minus 250 degrees Celsius, and being able to achieve superconducting state above minus 233 degrees Celsius is considered a high-temperature superconducting. Since the superconducting phenomenon was discovered in 1911, finding superconductors with higher temperatures and more suitable applications has become the target of countless scientists.

Nickel oxide is one of the important candidate materials for high-temperature superconductors. The research by the Southern University of Science and Technology team found that nickel-based materials can be achieved in daily stress environments and above minus 233 degrees Celsius.

How can the team transplant atomic structure that can be stable under high pressure to normal pressure? Over the past three years, the research team, led by Academician Xue Qikun and Associate Professor Chen Zhuoyu, has continued to work hard and developed a technology that can achieve "building atomic building blocks" on the nanoscale under extremely strong oxidation environments, and prepared it This superconducting nickel oxide film is realized under normal pressure. Experts introduced that the third type of high-temperature superconducting materials obtained under normal pressure this time have very important innovative significance and are an important breakthrough in the field of high-temperature superconducting.

Xue Qikun, an academician of the Chinese Academy of Sciences and president of the Southern University of Science and Technology, introduced that the instruments used in the experiment are all based on domestic equipment and atomic-scale thin film growth technology that achieves super oxidation capabilities is a major innovation in the country's independent development of experimental technology . In the later stage, we will further use the developed unique experimental technology to continue to explore different material systems, and strive to make their temperature higher than liquid nitrogen under normal pressure.