Microscopic dynamics of quantized vortices in turbulent superfluid in the T=0 limit
Lead Research Organisation:
Lancaster University
Department Name: Physics
Abstract
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Publications
Siddiq H
(2023)
Visualization of oscillatory electron dynamics on the surface of liquid helium
in Physical Review B
Schmoranzer D
(2019)
Dynamical similarity and instabilities in high-Stokes-number oscillatory flows of superfluid helium
in Physical Review B
Oyeleke K
(2022)
Novel bursting oscillations in a nonlinear gyroscope oscillator
in Physica Scripta
Omoteso K
(2022)
Delay-induced vibrational resonance in the Rayleigh-Plesset bubble oscillator
in Journal of Physics A: Mathematical and Theoretical
Olusola OI
(2020)
Quantum vibrational resonance in a dual-frequency-driven Tietz-Hua quantum well.
in Physical review. E
McClintock P V E
(2022)
A low-frequency, high-amplitude, torsional oscillator for turbulence studies in quantum fluids
in arXiv - Cond. Mat.
Guénault A
(2023)
A low-frequency, high-amplitude, torsional oscillator for studies of quantum fluids and solids
in Physics of Fluids
Guénault A
(2019)
Acoustic damping of quartz tuning forks in normal and superfluid He 3
in Physical Review B
Guthrie A
(2021)
Nanoscale real-time detection of quantum vortices at millikelvin temperatures
in Nature Communications
Barenghi C
(2023)
Vinen's Energy Barrier
in Journal of Low Temperature Physics
| Description | We have demonstrated the feasibility of creating a low-frequency oscillator to investigate dissipation and the creation of quantum vortices in superfluid He-4. We have discovered that the critical velocity for the creation of quantum turbulence is apparently much higher than anybody expected, given the high oscillator velocities that we are now achieving. However, further tests are needed in order to be sure. We intend to repeat the experiments using a cell with rougher surfaces while, at the same time, and to explore the effect of injecting quantum turbulence from a tuning fork. As things stand, the most likely explanation of the observations is that quantum vortices de-pin from the walls of the cell as the temperature falls into the millikelvin range. There have been indications of this possibility from the results of other very different kinds of experiments published over the last few years. This very important result will be followed up and further investigated under a new grant that started in January 2023. |
| Exploitation Route | Other people working on quantum fluids and solids are likely to find our new oscillator design useful, and we currently have a detailed paper in review. |
| Sectors | Aerospace, Defence and Marine,Energy,Other |
| URL | https://arxiv.org/pdf/2201.08503v1.pdf |
| Description | Creation and evolution of quantum turbulence in novel geometries |
| Amount | £1,277,686 (GBP) |
| Funding ID | EP/X004597/1 |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 01/2023 |
| End | 01/2027 |
| Description | Project IN-QUEST: Innovative Quantum-Enabling Sub-Kelvin Technology |
| Amount | £352,651 (GBP) |
| Funding ID | 133988 |
| Organisation | Innovate UK |
| Sector | Public |
| Country | United Kingdom |
| Start | 03/2020 |
| End | 11/2021 |
| Description | Quantum Enhanced Superfluid Technologies for Dark Matter and Cosmology |
| Amount | £1,272,336 (GBP) |
| Funding ID | ST/T006773/1 |
| Organisation | Science and Technologies Facilities Council (STFC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 12/2020 |
| End | 04/2024 |
| Title | High amplitude cryogenic oscillator |
| Description | We are developing a novel kind of low-frequency torsion oscillator. It incorporates a Be-Cu torsion rod and a body made of Araldite. Because of being very light, the resonant frequency is relatively low at around 74 Hz and therefore suitable for our experiments on vortex creation in superfluid He-4. Unusually, the driving electrodes are circular and planar enabling the oscillator to be driven to amplitudes almost an order of magnitude higher than conventional torsion oscillators without being short-circuited by direct touches. The prototype is working well, and has been tested: at room temperature, in air and in vacuum; at 77K in vacuum; and down to about 10 mK in vacuum and in superfluid He-4. The preliminary measurements strongly suggest that remanent quantum vortices de-pin from the inner walls of the oscillator at mK temperatures. This is potentially a very important result and it is currently being checked and analysed. Prior to publication of a full paper on the subject, we have published an arXiv preprint to make our new tool available to other scientists. |
| Type Of Material | Improvements to research infrastructure |
| Year Produced | 2022 |
| Provided To Others? | Yes |
| Impact | None yet. |
| URL | https://arxiv.org/abs/2201.08503 |
| Description | David Schmoranzer, Charles University, Prague |
| Organisation | Charles University |
| Country | Czech Republic |
| Sector | Academic/University |
| PI Contribution | We have done most of the experimental work at Lancaster, involving the development of a new kind of "pill-box" oscillator containg superfluid He-4 at mK temperatures. |
| Collaborator Contribution | David Schmoranzer has carried out calculations and developed models, and has also contributed to the experimental measurements during his visits to Lancaster. |
| Impact | Joint scientific papers, as listed under Publications. |
| Start Year | 2017 |
| Title | Torsional oscillator |
| Description | We are developing a novel kind of low-frequency torsion oscillator. It incorporates a Be-Cu torsion rod and a body made of Araldite. Despite being very light as a result, the resonant frequency is relatively low at around 74 Hz. Unusually, the driving electrodes are circular, enabling the oscillator to be driven to amplitudes almost an order of magnitude higher than conventional torsion oscillators without being short-circuited by direct touches. The prototype is working well, but we have yet to test it in a vacuum or under cryogenic conditions. Although designed specifically for our project on dissipation and vortex creation in superfluid helium, it is clear that a very sensitive pressure gauge could be developed from the same technology. |
| Type Of Technology | Detection Devices |
| Year Produced | 2018 |
| Impact | It is too soon for impacts. |