Scientists break 30-year superconductivity record at normal pressure | ScienceDaily

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Scientists break 30-year superconductivity record at normal pressure

Scientists just smashed a superconductivity record — bringing the dream of lossless power and futuristic energy tech one big step closer.

Date:<br>May 27, 2026<br>Source:<br>University of Houston<br>Summary:<br>Scientists at the University of Houston have shattered a long-standing superconductivity record, creating a material that can conduct electricity with zero resistance at the highest temperature ever achieved under normal pressure conditions. Their breakthrough pushes superconductivity to 151 Kelvin (minus 122°C), beating a record that stood for more than 30 years.<br>Share:

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Researchers at the University of Houston have broken the world record for superconductivity at ambient pressure, reaching a transition temperature of 151 Kelvin. Credit: Shutterstock

University of Houston researchers have achieved a major superconductivity breakthrough by setting a new temperature record for superconductors operating under ambient pressure conditions. The advance could eventually help create more efficient electrical grids, improved energy storage systems, faster electronics, and new technologies for fusion energy and medical imaging.

Scientists from the Texas Center for Superconductivity (TcSUH) and the University of Houston department of physics reached a superconducting transition temperature (Tc) of 151 Kelvin (about minus 122 degrees Celsius). That is now the highest Tc ever reported for a superconductor functioning at ambient pressure since superconductivity was first discovered in 1911.

The transition temperature marks the point where a material can carry electricity with zero resistance. Increasing this temperature has been one of the biggest goals in superconductivity research because higher operating temperatures could make superconducting technologies far more practical and affordable.

The findings by physicists Ching-Wu Chu and Liangzi Deng were published in the Proceedings of the National Academy of Sciences. Funding for the work came from Intellectual Ventures, the state of Texas through TcSUH, and several foundations.

"Transmitting electricity in the grid loses about 8% of the electricity," said Chu, professor of physics, TcSUH founding director and the paper's senior author. "If we conserve that energy, that's billions of dollars of savings and it also saves us lots of effort and reduces environmental impacts."

Why Superconductors Matter

Superconductors are materials that allow electricity to flow without resistance. Because no energy is lost as heat, they could dramatically improve the efficiency of electrical systems. Scientists also see superconductors as critical for technologies such as magnetic resonance imaging (MRI), fusion reactors, quantum technologies, and ultrafast electronics.

The challenge is that most superconductors only work at extremely low temperatures, requiring expensive cooling systems that limit widespread use.

"Once we bring the material to ambient pressure, it becomes much more accessible for scientists to use well-developed instrumentation to investigate it and further develop technologies for ambient condition operations," said Deng, assistant professor of physics, principal investigator at the TcSUH and lead author of the paper.

New Record Breaks Decades-Old Barrier

Researchers have spent decades searching for superconducting materials with increasingly higher transition temperatures.

A major milestone came in 1987 when Chu and his collaborators discovered that a material known as YBCO could become superconducting at minus 180 degrees C, or 93 K. That discovery helped launch a global race to develop high-temperature superconductors.

In 1993, scientists discovered a mercury-based copper-oxide ceramic called Hg1223 that reached superconductivity at minus 140 degrees C, or 133 K. That material held the ambient-pressure record for more than 30 years.

The new University of Houston achievement pushes the record 18 degrees C higher to 151 K.

Pressure Quenching Creates Stable Superconductivity

The breakthrough relied on a process known as pressure quenching. While pressure techniques are commonly used in other fields, including diamond production, the method is relatively new in superconductivity research.

Researchers first subjected the material to extremely high pressure, which enhanced its superconducting behavior and increased its transition temperature. While still under pressure, the material was cooled to a carefully chosen temperature before the pressure was suddenly removed.

That rapid release effectively preserved the enhanced superconducting properties, allowing the material to remain stable even after returning to normal pressure conditions.

"Other researchers have shown that reaching superconductivity at room...