Structure and superfluidity of ⁴He films on plated graphite
The results of an experimental study using torsional oscillators of the superfluidity of ⁴He films adsorbed on hydrogen plated graphite are reported. The evolution of superfluidity with the growth of the film shows considerable structure arising from the atomic layering of the film. There is evidenc...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 1997 |
| Автори: | , , , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
1997
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/175279 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Structure and superfluidity of ⁴He films on plated graphite / J. Nyeki, R. Ray, G. Sheshin, V. Maidanov, V. Mikheev, B. Cowan and J. Saunders // Физика низких температур. — 1997. — Т. 23, № 5-6. — С. 515-526. — Бібліогр.: 36 назв. — англ. |
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nasplib_isofts_kiev_ua-123456789-175279 |
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Nyeki, J. Ray, R. Sheshin, G. Maidanov, V. Mikheev, V. Cowan, B. Saunders, J. 2021-01-31T16:59:00Z 2021-01-31T16:59:00Z 1997 Structure and superfluidity of ⁴He films on plated graphite / J. Nyeki, R. Ray, G. Sheshin, V. Maidanov, V. Mikheev, B. Cowan and J. Saunders // Физика низких температур. — 1997. — Т. 23, № 5-6. — С. 515-526. — Бібліогр.: 36 назв. — англ. 0132-6414 PACS: 67.70.+n, 67.40.Kh, 67.40.Pm https://nasplib.isofts.kiev.ua/handle/123456789/175279 The results of an experimental study using torsional oscillators of the superfluidity of ⁴He films adsorbed on hydrogen plated graphite are reported. The evolution of superfluidity with the growth of the film shows considerable structure arising from the atomic layering of the film. There is evidence that the superfluidity of a single fluid layer is strongly suppressed, possibly due to the influence of the periodic potential arising from the underlying solid layer. The behavior of two fluid layers is quite distinct, but shows similarities to that of thicker films on heterogeneous substrates; we suggest that the usual theory of the superfluidity of two-dimensional ⁴He should be extended to account for superfluid onset temperatures in such a film. We thank Chris Lusher for help with the data acquisition system and Marcio Siqueira for suggestions and comments. We should also especially like to thank Р. Crowell, G. Mistura, Р. S. ЕЬеу, and О. Е. Vilches for useful advices and discussions. Technical assistance was provided at varjous stages bу John Taylor, Tony Wilkinson and Alan Betts. This work was supported bу EPSRC (UК) and the Royal Society and partially supported bу ІNТAS program (project 94-3416). en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Квантовые жидкости и квантовые кpисталлы Structure and superfluidity of ⁴He films on plated graphite Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Structure and superfluidity of ⁴He films on plated graphite |
| spellingShingle |
Structure and superfluidity of ⁴He films on plated graphite Nyeki, J. Ray, R. Sheshin, G. Maidanov, V. Mikheev, V. Cowan, B. Saunders, J. Квантовые жидкости и квантовые кpисталлы |
| title_short |
Structure and superfluidity of ⁴He films on plated graphite |
| title_full |
Structure and superfluidity of ⁴He films on plated graphite |
| title_fullStr |
Structure and superfluidity of ⁴He films on plated graphite |
| title_full_unstemmed |
Structure and superfluidity of ⁴He films on plated graphite |
| title_sort |
structure and superfluidity of ⁴he films on plated graphite |
| author |
Nyeki, J. Ray, R. Sheshin, G. Maidanov, V. Mikheev, V. Cowan, B. Saunders, J. |
| author_facet |
Nyeki, J. Ray, R. Sheshin, G. Maidanov, V. Mikheev, V. Cowan, B. Saunders, J. |
| topic |
Квантовые жидкости и квантовые кpисталлы |
| topic_facet |
Квантовые жидкости и квантовые кpисталлы |
| publishDate |
1997 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
The results of an experimental study using torsional oscillators of the superfluidity of ⁴He films adsorbed on hydrogen plated graphite are reported. The evolution of superfluidity with the growth of the film shows considerable structure arising from the atomic layering of the film. There is evidence that the superfluidity of a single fluid layer is strongly suppressed, possibly due to the influence of the periodic potential arising from the underlying solid layer. The behavior of two fluid layers is quite distinct, but shows similarities to that of thicker films on heterogeneous substrates; we suggest that the usual theory of the superfluidity of two-dimensional ⁴He should be extended to account for superfluid onset temperatures in such a film.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/175279 |
| citation_txt |
Structure and superfluidity of ⁴He films on plated graphite / J. Nyeki, R. Ray, G. Sheshin, V. Maidanov, V. Mikheev, B. Cowan and J. Saunders // Физика низких температур. — 1997. — Т. 23, № 5-6. — С. 515-526. — Бібліогр.: 36 назв. — англ. |
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