Journal
JOURNAL OF LOW TEMPERATURE PHYSICS
Volume 168, Issue 5-6, Pages 251-257Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-012-0619-2
Keywords
Solid helium; Dielectric constant; Supersolid
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Funding
- NSF [DMR 0654118, DMR 0706339, DMR 1103159]
- State of Florida
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1103159] Funding Source: National Science Foundation
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A careful measurement of the dielectric constant of solid He-4 was made to search for signatures associated with the reported onset of nonclassical rotational inertia and shear modulus stiffening. The samples studied include zero-pressure liquid, solid-liquid mixtures on the melting-curve and solid helium. It was found that the dielectric constant of solid He-4 decreases smoothly with temperature below 300 mK, showing no measurable anomalies down to 50 mK. The new measurements do not show the anomalous upturn effect that was reported in our previous measurements.
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