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Home » Condensed matter » States of matter » Superfluid phase spotted in molecular hydrogen for the first time

Superfluid phase spotted in molecular hydrogen for the first time

07 Apr 2025 Isabelle Dumé
Diagram showing a molecule of methane (1 carbon and four hydrogen atoms) surrounded by several hydrogen molecules, all depicted as ball-and-stick models. The molecules are within a blue circle, representing the helium nanodroplet. On the right, a second diagram shows the same system, but with a laser light shining on it, and depicting the methane molecule as a ruby-red droplet surrounded by a frozen-looking liquid.
Ultracold lab: To demonstrate superfluidity in molecular hydrogen, researchers at the University of British Columbia, RIKEN and Kanazawa University confined the molecules within a nanodroplet of helium, then embedded a methane molecule within the hydrogen molecules (left). By shining a laser beam on the methane (right), they set it rotating, and measurements of the rotation led them to identify the onset of superfluidity in hydrogen. (Courtesy: Susumu Kuma, RIKEN)
An international team led by chemists at the University of British Columbia (UBC), Canada, has repor

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Isabelle Dumé is a contributing editor to Physics World
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