Our group has provided clear experimental evidence that hydrogen molecules can exhibit superfluidity at ultracold temperatures.
Using advanced laser spectroscopy, we observed unique rotational behaviour in nanoscale liquid hydrogen clusters, confirming a 50-year-old theoretical prediction. This study, published in Science Advances, expands our understanding of quantum matter and may inspire future advancements in hydrogen-based clean energy technologies.
Publication: Hatsuki Otani, Susumu Kuma, Majd Mustafa, Jeff C. W. Lee, Pavle Djuricanin, and Takamasa Momose, “Exploring Molecular Superfluidity of Parahydrogen Clusters.“, Sci. Adv. 11, eadu1093 (2025).