2010/05/06 by Michael Ray, M. W. Ray, Ray, M. W. +2
Engineering · Physics and Astronomy · #FOS: Physical sciences #Other Condensed Matter (cond-mat.other) #Quantum, superfluid, helium dynamics #Spacecraft and Cryogenic Technologies #Superconducting Materials and Applications #cond-mat.other
paper · pdf · doi:10.48550/arxiv.1005.1022
4 pages, 4 figures
arxiv created 2010/05/06 · openalex publication_date 2010/05/06 · arxiv updated 2010/05/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We observe a thermo-mechanical effect when a chemical potential difference is created by a temperature difference imposed between two liquid reservoirs connected to each other through Vycor rods in series with solid hcp 4He. By creating a temperature difference, ΔT, between the two reservoirs, we induce a rate-limited growth of a pressure difference between the two reservoirs, ΔP. In equilibrium ΔP \it vs. ΔT is in quantitative agreement with the thermo-mechanical effect in superfluid helium. These observations confirm that below ∼ 600 mK a flux-limited flow exists through the solid helium.