Nickelate Films Crossed 63 K. The Substrate Is the Wall.

Xue Qikun's group at Southern University of Science and Technology posted a 63 K onset temperature for ambient-pressure nickelate superconductivity in National Science Review in April 2026. Co-authors Guangdi Zhou, Heng Wang, and Zhuoyu Chen led the experimental work. Xue, SUSTech's president, is the physicist who produced the first experimental demonstration of the quantum anomalous Hall effect in 2013.

That 63 K onset is a 40% gain over the same group's 45 K result from February 2025, the first ambient-pressure nickelate result on record. Onset and zero-resistance are not the same measurement. Zero resistance arrives at 37 K in the same film, requiring liquid neon rather than the liquid nitrogen that cuprate power cables run on today.

At ambient pressure, La3Ni2O7 holds the tetragonal crystal structure needed for superconductivity only inside nanometer-thin films on SrLaAlO4 substrates. The substrate's compressed lattice spacing imposes the phase by force. Remove it and the superconductivity disappears.

Under pressure above 14 gigapascals, bulk La3Ni2O7 crystals reach 96 K, above the 77 K liquid nitrogen threshold where power cables and MRI magnets become economical. No group has held that phase at atmospheric pressure in a freestanding crystal.

E. K. Ko's group at Stanford and SLAC reported onset temperatures of 26 to 42 K in Nature in early 2025; zero resistance appeared only below 2 K. The same SUSTech team published an earlier result in February 2025: onset above 40 K in (La,Pr)3Ni2O7 films using the same substrate-strain technique. Stanford and Yale are the independent replicators; the February result is a predecessor from the same lab, not a separate group.

The pairing mechanism remains unresolved; a 2024 study in npj Computational Materials ruled out electron-phonon coupling. At Yale, Dung Vu under Charles Ahn showed in Nature Communications that europium doping preserves superconductivity in magnetic fields. A September 2025 National Science Review survey named five groups producing ambient-pressure thin-film results and called sample quality "a critical bottleneck."

These results change the math on who nickelates are for right now: researchers, not procurement officers. The $1.4 billion global superconducting wire market runs on BSCCO and YBCO, cuprate materials whose 18-year commercial path ran lab-to-PO through bulk wire synthesis. Bednorz and Müller reported cuprate superconductivity in 1986; Sumitomo's first commercial BSCCO wire contracts arrived in 2004, and that clock started only after bulk synthesis was solved.

Periodic Labs, founded by former OpenAI VP Liam Fedus and Google DeepMind materials lead Ekin Dogus Cubuk, has named a room-temperature superconductor as its first commercial target. It raised $300 million in September 2025 from Andreessen Horowitz, Nvidia, and Jeff Bezos. Periodic Labs has not disclosed which material class it is actively synthesizing; its public mandate covers any superconductor pathway, not nickelates specifically.

The conservative horizon for a PO-ready nickelate wire runs 15 to 20 years past one gate: a freestanding bulk crystal, at atmospheric pressure, holding 77 K zero resistance. The 18-year cuprate precedent is the floor; nickelate pairing remains mechanically unresolved in a way cuprate phenomenology was not at the commercial stage. No such gate report exists.