Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry
We describe experiments on superfluid ³He in a cylinder of 1 mm in diameter. This geometry causes the preferred orientation of the n-vector in the superfluid B-phase to be locally different, resulting in a curved configuration across the sample. Exclusive to our experiment is the observation that...
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| Видавець: | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
|---|---|
| Дата: | 2013 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2013
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/118745 |
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| Цитувати: | Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry / O.W.B. Benningshof, R. Jochemsen// Физика низких температур. — 2013. — Т. 39, № 9. — С. 986–991. — Бібліогр.: 22 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-118745 |
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irk-123456789-1187452017-06-01T03:06:31Z Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry Benningshof, O.W.B. Jochemsen, R. Сверхтекучий ⁴He и ³He We describe experiments on superfluid ³He in a cylinder of 1 mm in diameter. This geometry causes the preferred orientation of the n-vector in the superfluid B-phase to be locally different, resulting in a curved configuration across the sample. Exclusive to our experiment is the observation that we succeeded in obtaining a texture which is metastable and unchanged in our pressure and temperature ranges, most likely because the experiment is performed at low pressures and low magnetic fields. As this texture can be considered as a potential for spin waves, we had the unique opportunity to study spin waves for several pressures in exactly the same texture. Our geometry causes this texture potential to be nearly quadratic, allowing an analytic solution of the theory which can be compared to our experimental results. As predicted we find the intensities of all spin wave modes more or less equal. Increasing the pressure shows a gradual increase in the number of spin wave modes in our cell. Finally we were able to cause a transition from the metastable to the predicted stable texture, concluding unexpectedly that the metastable texture is realized if the growing (or cooling) speed is sufficiently slow. 2013 Article Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry / O.W.B. Benningshof, R. Jochemsen// Физика низких температур. — 2013. — Т. 39, № 9. — С. 986–991. — Бібліогр.: 22 назв. — англ. 0132-6414 PACS: 67.30.he, 67.30.hj, 67.30.ht http://dspace.nbuv.gov.ua/handle/123456789/118745 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Сверхтекучий ⁴He и ³He Сверхтекучий ⁴He и ³He |
| spellingShingle |
Сверхтекучий ⁴He и ³He Сверхтекучий ⁴He и ³He Benningshof, O.W.B. Jochemsen, R. Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry Физика низких температур |
| description |
We describe experiments on superfluid ³He in a cylinder of 1 mm in diameter. This geometry causes the preferred
orientation of the n-vector in the superfluid B-phase to be locally different, resulting in a curved configuration
across the sample. Exclusive to our experiment is the observation that we succeeded in obtaining a texture
which is metastable and unchanged in our pressure and temperature ranges, most likely because the experiment
is performed at low pressures and low magnetic fields. As this texture can be considered as a potential for spin
waves, we had the unique opportunity to study spin waves for several pressures in exactly the same texture. Our
geometry causes this texture potential to be nearly quadratic, allowing an analytic solution of the theory which
can be compared to our experimental results. As predicted we find the intensities of all spin wave modes more or
less equal. Increasing the pressure shows a gradual increase in the number of spin wave modes in our cell. Finally
we were able to cause a transition from the metastable to the predicted stable texture, concluding unexpectedly
that the metastable texture is realized if the growing (or cooling) speed is sufficiently slow. |
| format |
Article |
| author |
Benningshof, O.W.B. Jochemsen, R. |
| author_facet |
Benningshof, O.W.B. Jochemsen, R. |
| author_sort |
Benningshof, O.W.B. |
| title |
Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry |
| title_short |
Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry |
| title_full |
Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry |
| title_fullStr |
Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry |
| title_full_unstemmed |
Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry |
| title_sort |
spin waves in the b-phase of superfluid ³he in confined cylindrical geometry |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2013 |
| topic_facet |
Сверхтекучий ⁴He и ³He |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/118745 |
| citation_txt |
Spin waves in the B-phase of superfluid ³He in confined cylindrical geometry / O.W.B. Benningshof, R. Jochemsen// Физика низких температур. — 2013. — Т. 39, № 9. — С. 986–991. — Бібліогр.: 22 назв. — англ. |
| series |
Физика низких температур |
| work_keys_str_mv |
AT benningshofowb spinwavesinthebphaseofsuperfluid3heinconfinedcylindricalgeometry AT jochemsenr spinwavesinthebphaseofsuperfluid3heinconfinedcylindricalgeometry |
| first_indexed |
2023-10-18T20:32:53Z |
| last_indexed |
2023-10-18T20:32:53Z |
| _version_ |
1796150487028858880 |