Symmetries of the physical world have guided formulation of fundamental laws, including relativistic quantum field theory and understanding of possible states of matter. Topological …
J Rysti, JT Mäkinen, S Autti, T Kamppinen… - Physical Review Letters, 2021 - APS
The formation of topological defects in continuous phase transitions is driven by the Kibble- Zurek mechanism. Here we study the formation of single-and half-quantum vortices during …
VV Dmitriev, VB Eltsov, J Rysti, AA Soldatov… - Journal of Low …, 2022 - Springer
A new superfluid phase of 3 He, a polar phase, which is known to stabilize in nematic aerogel, has already led to the observation of many new phenomena. One important …
T Kamppinen, J Rysti, MM Volard, GE Volovik… - Nature …, 2023 - nature.com
Superconductivity and superfluidity with anisotropic pairing—such as d-wave in cuprates and p-wave in superfluid 3He—are strongly suppressed by impurities. Meanwhile, for …
AM Guénault, RP Haley, S Kafanov, MT Noble… - Physical Review B, 2019 - APS
We investigate the damping experienced by quartz tuning fork resonators in normal and superfluid He 3 as a function of their resonance frequency from 22 to 250 kHz and contrast it …
TS Riekki, AP Sebedash, JT Tuoriniemi - Journal of Low Temperature …, 2020 - Springer
We studied a novel cooling method, in which^ 3 He 3 He and^ 4 He 4 He are mixed at the^ 4 He 4 He crystallization pressure at temperatures below 0.5\, mK 0.5 mK. We describe the …
TS Riekki, JT Tuoriniemi, AP Sebedash - Journal of Low Temperature …, 2020 - Springer
We studied the thermal conductivity of superfluid^ 3 3 He in a 2.5-mm effective diameter and 0.15-m-long channel connecting the two volumes of our experimental assembly. The main …
Our experimental assembly consists of a large main volume and a smaller sinter-filled heat- exchanger volume connected together by a narrow channel. Most of the main volume is …
New Methods of Measurements in Superfluid Helium Page 1 Lancaster University New Methods of Measurements in Superfluid Helium by Mark Theodore Noble, MPhys (Hons) This …