Another wrench has been thrown into the claim of experimental observation of supersolids. A new paper in PRL[1] is throwing doubt into such observation, and in fact, attribute the apparent observation to quantum plasticity.
Looks like a lot more work needs to be done to verify if we truly have a supersolid in such a system.
Zz.
[1] J. D. Reppy Phys. Rev. Lett. 104, 255301 (2010).
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