PARIS, France — Scientists on Wednesday said that they have successfully stirred a strange matter called a "supersolid" — ...

Scientists have officially spotted characteristics of superfluidity (a quantum fluid with zero viscosity) inside a two-dimensional supersolid for the first time. In a new study, physicists from ...

They found that this nearly two-dimensional crystal exhibits a small but measurable superfluid density, indicating the presence of a supersolid phase[2]. This finding is particularly intriguing as ...