University of Houston Scientists Break 30-Year Superconductivity Record

Record-Breaking Transition Temperature

Scientists at the University of Houston have established a new record for superconductivity at normal pressure conditions. The research team created a material capable of conducting electricity with zero resistance at 151 Kelvin, which is approximately minus 122 degrees Celsius. This achievement surpasses a superconductivity record that had remained unbeaten for more than 30 years.

Superconductivity occurs when a material reaches a specific threshold, known as the transition temperature (Tc), below which it can carry electrical current without any energy loss. The 151 Kelvin mark is now the highest temperature ever recorded for a superconductor operating at ambient pressure.

The Pressure Quenching Process

The breakthrough was achieved through a technique described as "pressure quenching". This process involves applying intense pressure to the substance, similar to the methods used in laboratories to create diamonds. While the material is under this high pressure, it is cooled, and the pressure is then rapidly released.

According to reports, this burst of deep cold and high pressure "locks in" the high-temperature superconducting behavior of the material. By squeezing the material and then rapidly releasing the pressure, the scientists were able to reduce the amount of cooling required for the substance to become a superconductor.

Material Composition and Collaboration

The material used in the experiment is a ceramic, mercury- and copper-based compound. The study was led by University of Houston physicists Ching-Wu Chu and Liangzi Deng.

In addition to the University of Houston, the research involved collaboration with Argonne National Lab and Intellectual Ventures. The findings of the study were published in the Proceedings of the National Academy of Sciences.

Potential Applications

Researchers involved in the project suggested that this breakthrough could change the methods used to transmit energy. Because superconductors eliminate energy loss during the conduction of electricity, increasing the temperature at which they can operate at ambient pressure is a primary goal for the field.