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Transport of bound quasiparticle states in a two-dimensional boundary superfluid
The B phase of superfluid (3)He can be cooled into the pure superfluid regime, where the thermal quasiparticle density is negligible. The bulk superfluid is surrounded by a quantum well at the boundaries of the container, confining a sea of quasiparticles with energies below that of those in the bul...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10622538/ https://www.ncbi.nlm.nih.gov/pubmed/37919295 http://dx.doi.org/10.1038/s41467-023-42520-y |
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author | Autti, Samuli Haley, Richard P. Jennings, Asher Pickett, George R. Poole, Malcolm Schanen, Roch Soldatov, Arkady A. Tsepelin, Viktor Vonka, Jakub Zavjalov, Vladislav V. Zmeev, Dmitry E. |
author_facet | Autti, Samuli Haley, Richard P. Jennings, Asher Pickett, George R. Poole, Malcolm Schanen, Roch Soldatov, Arkady A. Tsepelin, Viktor Vonka, Jakub Zavjalov, Vladislav V. Zmeev, Dmitry E. |
author_sort | Autti, Samuli |
collection | PubMed |
description | The B phase of superfluid (3)He can be cooled into the pure superfluid regime, where the thermal quasiparticle density is negligible. The bulk superfluid is surrounded by a quantum well at the boundaries of the container, confining a sea of quasiparticles with energies below that of those in the bulk. We can create a non-equilibrium distribution of these states within the quantum well and observe the dynamics of their motion indirectly. Here we show that the induced quasiparticle currents flow diffusively in the two-dimensional system. Combining this with a direct measurement of energy conservation, we conclude that the bulk superfluid (3)He is effectively surrounded by an independent two-dimensional superfluid, which is isolated from the bulk superfluid but which readily interacts with mechanical probes. Our work shows that this two-dimensional quantum condensate and the dynamics of the surface bound states are experimentally accessible, opening the possibility of engineering two-dimensional quantum condensates of arbitrary topology. |
format | Online Article Text |
id | pubmed-10622538 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-106225382023-11-04 Transport of bound quasiparticle states in a two-dimensional boundary superfluid Autti, Samuli Haley, Richard P. Jennings, Asher Pickett, George R. Poole, Malcolm Schanen, Roch Soldatov, Arkady A. Tsepelin, Viktor Vonka, Jakub Zavjalov, Vladislav V. Zmeev, Dmitry E. Nat Commun Article The B phase of superfluid (3)He can be cooled into the pure superfluid regime, where the thermal quasiparticle density is negligible. The bulk superfluid is surrounded by a quantum well at the boundaries of the container, confining a sea of quasiparticles with energies below that of those in the bulk. We can create a non-equilibrium distribution of these states within the quantum well and observe the dynamics of their motion indirectly. Here we show that the induced quasiparticle currents flow diffusively in the two-dimensional system. Combining this with a direct measurement of energy conservation, we conclude that the bulk superfluid (3)He is effectively surrounded by an independent two-dimensional superfluid, which is isolated from the bulk superfluid but which readily interacts with mechanical probes. Our work shows that this two-dimensional quantum condensate and the dynamics of the surface bound states are experimentally accessible, opening the possibility of engineering two-dimensional quantum condensates of arbitrary topology. Nature Publishing Group UK 2023-11-02 /pmc/articles/PMC10622538/ /pubmed/37919295 http://dx.doi.org/10.1038/s41467-023-42520-y Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Autti, Samuli Haley, Richard P. Jennings, Asher Pickett, George R. Poole, Malcolm Schanen, Roch Soldatov, Arkady A. Tsepelin, Viktor Vonka, Jakub Zavjalov, Vladislav V. Zmeev, Dmitry E. Transport of bound quasiparticle states in a two-dimensional boundary superfluid |
title | Transport of bound quasiparticle states in a two-dimensional boundary superfluid |
title_full | Transport of bound quasiparticle states in a two-dimensional boundary superfluid |
title_fullStr | Transport of bound quasiparticle states in a two-dimensional boundary superfluid |
title_full_unstemmed | Transport of bound quasiparticle states in a two-dimensional boundary superfluid |
title_short | Transport of bound quasiparticle states in a two-dimensional boundary superfluid |
title_sort | transport of bound quasiparticle states in a two-dimensional boundary superfluid |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10622538/ https://www.ncbi.nlm.nih.gov/pubmed/37919295 http://dx.doi.org/10.1038/s41467-023-42520-y |
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