Magnetic fields can 'revive' superconductivity in nickelates, research reveals

A research team led by Professor Denver Li Danfeng, Associate Dean of the College of Science and Associate Professor in the Department of Physics at City University of Hong Kong, has achieved a significant advance in superconducting. The science-journalism coverage adds useful context, while the strongest evidential footing still comes from the underlying data, papers or institutional documentation.

It is relevant because physics only takes a result seriously when the measurement chain remains robust under scrutiny. Experimental particle physics and precision metrology both operate in regimes where the signal sits far below the background noise, and where systematic uncertainties can mimic new physics if not controlled rigorously. The history of the field contains numerous anomalies that generated theoretical excitement before better data showed them to be artifacts, and it also contains genuine discoveries that were initially dismissed as noise. The difference is almost always resolved by independent replication with different instruments and different systematics. This article has been reviewed according to Science X's editorial process and policies. City University of Hong Kong (CityUHK) A research team led by Professor Denver Li Danfeng, Associate Dean (Research and Postgraduate Education) of the College of Science and.

The findings are published in Nature, titled " Field re-entrant superconductivity in Eu-doped infinite-layer nickelates. By precisely controlling the incorporation of the rare-earth element europium (Eu) into infinite-layer nickelates, the CityUHK-led team observed that superconductivity is first.

Traditional re-entrant superconductivity is highly sensitive to the orientation of the magnetic field and typically occurs only within a very narrow angular range (2°–10°). In contrast, the team found that the re-entrant superconducting state in nickelates remains stable across a broad angular range from 0° to 90°.

The study also found that this high-field superconducting state is highly stable, reappearing at magnetic fields above approximately 15 tesla (approximately 300, 000 times stronger. Since the initial discovery of superconductivity in infinite-layer nickelates in 2019, these materials have attracted significant attention because of their similarity in.

The broader interest lies as much in the method as in the headline number, because a durable measurement procedure can travel farther than a single result. When experimental physicists develop a technique that achieves new sensitivity or controls a previously uncharacterized systematic, that methodological contribution persists even if the specific measurement is later revised. This is one reason why precision physics experiments often generate long-term value that is not immediately visible in the original publication.

That breakthrough was achieved by a research team at Stanford University, in a study with Professor Li as the first and a co-corresponding author. Discover the latest in science, tech, and space with over 100, 000 subscribers who rely on Phys. org for daily insights.

Because this item comes through Phys. org Physics as science journalism, it should be treated as contextual reporting rather than primary evidence. Good science reporting can identify why a result matters, connect it to the wider literature and make technical work readable, but the decisive evidence remains in the original paper, dataset, mission release or technical record. That distinction is especially important when a story is later repeated by aggregators, because repetition increases visibility, not evidential strength.

The next step is more measurement, tighter systematic control and scrutiny from groups whose experimental setups are genuinely independent. In experimental particle physics and precision metrology, the threshold for a discovery claim is a five-sigma excess surviving multiple analyses; an intriguing signal at lower significance is a reason to run more experiments, not a reason to revise the textbooks. Next-generation experiments currently under construction or commissioning will revisit several of the open questions that give the current result its context.

Source