A search for disordered (glassy) phase in solid 3He deformed in situ

Details A search for disordered (glassy) phase in solid 3He deformed in situ A search for disordered (glassy) phase in solid 3He deformed in situ

2010-12-06

arxiv.org/abs/1012.1150v1

Physics

Condensed Matter

Other Condensed Matter

9 pages, 4 figures

Scientific paper

A disordered (glassy) state has been searched in solid 3He deformed in the course of experiment employing precise measurements of pressure. The analysis of the temperature dependence of the crystal pressure measured at a constant volume shows that the main contribution to the pressure is made by the phonon subsystem, the influence of the disordered phase being very weak. Annealing of the deformed crystal does not affect this state. The results obtained differ greatly from the corresponding data for solid 4He measured in the region of supersolid effects where a pressure excessive in comparison to the phonon one was registered. The excess pressure had a quadratic dependence on temperature, which is typical of a disordered system. Absence of the excess pressure in solid 3He is unclear yet, some speculative interpretations are suggested.

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