No law of physics rules out room-temperature superconductors, and 16 researchers just laid out how to find them

Proceedings of the National Academy of Sciences (PNAS), 2026

Loss-free power transmission. Quantum computers that operate without extreme cooling. MRI machines that cost a fraction of current prices. The applications of a room-temperature superconductor read like a wish list for modern technology. The problem has always been that superconductivity, the phenomenon where electrical resistance drops to zero, occurs only at extremely low temperatures in known materials.

But an international team of 16 researchers now argues that this is an engineering problem, not a physics one. In a perspective article published in the Proceedings of the National Academy of Sciences (PNAS), they state plainly that no fundamental physical law prevents superconductivity at ambient temperature. What is needed, they contend, is a coordinated, systematic search rather than the scattered efforts that have characterized the field for decades.

A new record as proof of momentum

The strategy paper points to a companion study in the same issue of PNAS as evidence that the field is accelerating. Researchers at the University of Houston used a technique called pressure quenching to push the critical temperature of Hg-1223, the compound that has held the record for superconductivity at normal pressure since 1993, from 133 Kelvin to 151 Kelvin.

The method involved cooling the material to near absolute zero while subjecting it to pressures roughly 300,000 times normal atmospheric pressure. When the pressure was rapidly released, the higher critical temperature persisted. The effect lasted for two weeks and was reproduced across five different samples.

This is not room temperature. 151 Kelvin is still approximately minus 122 degrees Celsius. But the fact that a decades-old record was broken by a meaningful margin, and that the enhanced properties survived after pressure was removed, signals that the field has new tools and new momentum.

Two challenges: prediction and engineering

The perspective identifies two central obstacles. The first is a prediction challenge: current computational models can forecast whether a hypothetical material might superconduct, but they cannot reliably predict whether that material can actually be synthesized. This gap means that computational searches often identify candidates that exist only on paper.

Christoph Heil of Graz University of Technology, one of the 16 authors, described recent progress in simulation capabilities. Ab initio calculations, meaning simulations built from fundamental physics rather than empirical rules, can now model superconductivity at the nanometer scale, roughly ten times larger than was possible just a few years ago. Combining these precise calculations with machine learning allows researchers to search the vast space of possible material combinations more efficiently.

The second challenge is engineering. Even when a promising material is identified, physical manipulation may be needed to coax it into a superconducting state. Extreme pressure, targeted doping, nanostructuring, and ultrashort light pulses are all potential tools. The authors propose treating candidate superconductors as "quantum metamaterials," engineered systems whose superconducting properties emerge from precisely designed nanoscale structures rather than chemical composition alone.

Closing the loop between theory and experiment

A central argument of the paper is that theory and experiment need to work in a much tighter feedback loop. Historically, superconductor discovery has been largely serendipitous. Researchers made materials, tested them, and occasionally found surprises. The authors want to replace this approach with one where computational models guide experiments, and experimental results immediately feed back into model improvement.

This is not a new idea in materials science broadly, but the authors argue it has not been seriously implemented in superconductivity research. The field has been fragmented, with theorists and experimentalists often working in parallel rather than in concert.

An appeal, not a proof

The paper is explicitly a strategy document, not a research finding. It does not demonstrate that room-temperature superconductivity is achievable, only that the authors believe the physics allows it and that a coordinated effort could reach it. The claim that superconductivity is "an almost universal property of non-magnetic metals" is a theoretical position, not an experimental one.

The history of superconductivity research includes notable false claims, including the widely publicized and subsequently debunked room-temperature superconductor announcement in 2023. The field carries a credibility burden that makes extraordinary claims subject to extraordinary scrutiny.

What the perspective does offer is a concrete research agenda from a credible group of scientists at institutions including Harvard, MIT, Cambridge, Columbia, and the Carnegie Institution. Whether the research community will rally around a coordinated approach, and whether funding agencies will support the scale of effort the authors envision, remains to be seen.