Superconductivity Breakthrough at 151 Kelvin
On June 29 at 10:00 PM, researchers from the University of Houston and Argonne National Laboratory reported reaching superconductivity at 151 Kelvin under standard atmospheric pressure. This new record surpasses the previous one by 18 Kelvin, a milestone that had stood since the early 1990s. To accomplish this, the team utilized a copper oxide compound known as Hg-1223. They first compressed it to nearly 30 gigapascals (roughly 300,000 atmospheres) and then rapidly released the pressure, locking the material into a metastable state.
Research Methodology
The technique employed, called pressure quenching, induces numerous microscopic defects within the copper oxide's crystal structure, thereby stabilizing its superconductivity. Measurements were conducted using X-ray beams at Argonne Laboratory, ensuring the accuracy of the findings.
The significance of this discovery was emphasized by the scientists.
“Since this material retains superconductivity at normal pressure, researchers can study it using widely available instruments and begin developing technologies that operate under everyday conditions,”noted Hua Zhou. However, it should be noted that deep cooling is still required to utilize this material.
As a result, achieving superconductivity at 151 Kelvin opens up new avenues for research and the development of technologies that can function in conditions accessible for broader use. This could have a major impact on various sectors, including:
- electronics
- energy
- transportation
Yet, despite this significant progress, practical application remains a challenge due to the need to maintain low temperatures to preserve superconductivity.