Boron layers could set a superconductivity record, theoretical study predicts

August 7, 2026 report Boron layers could set a superconductivity record, theoretical study predicts Paul Arnold Author Lisa Lock Scientific Editor Robert Egan Senior Editor Scientists in China predict that stacking two microscopic layers of boron could set a new record for superconductivity. Superconductors are materials that conduct electricity with zero resistance. Traditional types need temperatures close to absolute zero to work, requiring complex and expensive cooling equipment. However, in this new research published in the journal Physical Review Letters, the team predicted a single-element superconductor that works at a much less extreme temperature. If replicated in the real world, it could mean much lower cooling costs and a major step toward improving the efficiency of power grids and technologies like medical MRI scanners and maglev trains. Currently, the best-known elemental superconductor, scandium, reaches 36 Kelvin (K) (-237°C [-395°F]) only at about 260 gigapascals of pressure. In the new study, scientists predict a threshold of 68 K (-205°C [-337°F]) for the stacked boron layers. Searching through thousands of possible structures Instead of building the superconductor in a lab, the study authors used advanced computer simulations to calculate how electrons and atoms behave inside the material. They modeled two ultrathin, single-atom layers of boron, known as borophene, in thousands of different stacked arrangements. The best-performing structure featured direct boron–boron bonds linking the two layers. This structure changed how the material vibrated, strengthening the interactions that allow electrons to pair up and flow freely at much higher temperatures than normal. In total, the team ran calculations across more than 9,000 different structural arrangements to pinpoint the optimal one. The best-performing arrangement was an AA-stacked bilayer borophene structure. When they ran their calculations, they found that it achieved a predicted temperature of 68 K at normal atmospheric pressure. "Bilayer borophenes set a new benchmark for elemental superconductivity, exceeding the Tc of all known elemental systems under both ambient and high pressure," commented the scientists in their paper. How atomic bonds make the difference One of the other noteworthy aspects of this work is the underlying mechanism that makes it possible. Unlike typical two-dimensional materials that are held together by weak interactions, the two borophene layers are connected by strong covalent boron–boron bonds. This changed how the atoms vibrated and opened a new way to achieve superconductivity at higher temperatures. "These findings reveal interlayer covalent bonding as a powerful and previously underexplored route to boosting superconductivity in light-element systems." Because these results were entirely based on theoretical modeling, experimental validation in a lab will be an important next step. Written for you by our author Paul Arnold, edited by Lisa Lock, and fact-checked and reviewed by Robert Egan—this article is the result of careful human work. We rely on readers like you to keep independent science journalism alive. If this reporting matters to you, please consider a donation (especially monthly). You'll get an ad-free account as a thank-you. Publication details Meng-hui Wang et al, Bilayer Borophenes Establish a New Upper Limit for Elemental Superconducting Transition Temperatures, Physical Review Letters (2026). DOI: 10.1103/8l19-rdn2 Journal information: Physical Review Letters © 2026 Science X Network