New Dissipation Relaxation Phenomenon in Oscillating Solid He-4

Abstract

We describe the first observations on the time-dependent dissipation when the drive level of a torsional oscillator containing solid He-4 is abruptly changed. The relaxation of dissipation in solid He-4 shows rich dynamical behavior including exponential and logarithmic time-dependent decays, hysteresis, and memory effects.

4 pages, 4 figures

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• Theory of Supersolidity
• Non-Classical Response from Quench-Cooled Solid Helium Confined in Porous Gold
• Dislocation-induced superfluidity in a model supersolid
• NMR Study of Disordered Inclusions in the Quenched Solid Helium
• Influence of Ortho-H2 Clusters on the Mechanical Properties of Solid Para-H2