Characterization of Dislocations in hcp by Torsional Oscillator and Thermal Conductivity Measurements

MY Brazhnikov, YM Mukharsky, AI Golov - Journal of Low Temperature …, 2022 - Springer
We apply two complementary techniques for the characterization of mobile dislocations in
samples of hcp 4 He with the concentration of 3 He∼ 3× 10-7, grown by the blocked …

Frequency dependence of the supersolid signature in polycrystalline 4He

G Nichols, M Poole, J Nyeki, J Saunders… - arXiv preprint arXiv …, 2013 - arxiv.org
We report studies, using a two mode torsional oscillator, of the putative supersolid signature
in polycrystalline 4He. Measurements at two frequencies enable us to eliminate the …