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Paper detail

Supersolid behavior in confined geometry

We have carried out torsional oscillator (TO) and heat capacity (HC) measurements on solid 4He samples grown within a geometry which restricts the helium to thin (150 um) cylindrical discs. In contrast to previously reported values from Rittner and Reppy of 20% non-classical rotational inertia (NCRI) for similar confining dimensions, 0.9% NCRI (consistent with that found in bulk samples and samples imbedded in porous media) was observed in our TO cell. In this confined geometry the heat capacity peak is consistent with that found in bulk solid samples of high crystalline quality.

preprint2009arXivOpen access
J. T. WestX. LinZ. G. ChengM. H. W. Chan
cond-mat.other
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J. T. WestX. LinZ. G. ChengM. H. W. Chan

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