Supersolid

Supersolid

Matrix Isolation of Hand Datoms: Physics and Chemistry From 1.5 To 0.1 K

Published in Leonid Khriachtchev, Physics and Chemistry at Low Temperatures, 2019

Vladimir V. Khmelenko, David M. Lee, Sergey Vasiliev

High-stability atomic hydrogen in the experiments with H2 films at temperatures below 1 K opens up the possibility of creating samples with even higher densities and cooling them to much lower temperatures. This makes this system a good candidate for observing collective quantum phenomena, such as Bose–Einstein condensation and supersolid behavior.

Helium II phase: superfluid, supersolid, liquid crystal or spin ice?

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Journal Information

Published in Molecular Physics, 2022

K. A. Chishko

In 2004, Kim and Chan [25–27], based on more recent research [175], reported an effect which they called ‘supersolid’ because it seems to be a superfluid behaviour within presumably solid phase. The solid He crystallised in cylindric cell of torsion oscillator at different pressures was treated by alternative torsion deformation and had been found that the resonant frequency of the oscillator (at certain regimes) drops when the temperature decreases, so that it seems that moment of inertia of the system reduces. Authors of Refs. [25–27] called the phenomenon as NCRI – ‘non-classical rotational inertia’, and explained it as existence of specific low-temperature supersolid phase with superfluid behaviour within a specific solid state. This report initiated a wide discussion with a number explanation of the observed phenomenon.

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Matrix Isolation of Hand Datoms: Physics and Chemistry From 1.5 To 0.1 K

Helium II phase: superfluid, supersolid, liquid crystal or spin ice?