Orientational ordering in monolayers of ortho–para hydrogen
We discuss orientational ordering in monolayers of solid hydrogen in view of recent experimental findings in NMR studies of (ortho)c–(para)₁–c-hydrogen mixtures on boron nitride substrate. Analysis of the temperature-concentration behavior for the observed NMR frequency splitting is given on the bas...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2003 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/128913 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Orientational ordering in monolayers of ortho–para hydrogen / V.B. Kokshenev, N.S. Sullivan // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 980-984. — Бібліогр.: 23 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862594221302611968 |
|---|---|
| author | Kokshenev, V.B. Sullivan, N.S. |
| author_facet | Kokshenev, V.B. Sullivan, N.S. |
| citation_txt | Orientational ordering in monolayers of ortho–para hydrogen / V.B. Kokshenev, N.S. Sullivan // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 980-984. — Бібліогр.: 23 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | We discuss orientational ordering in monolayers of solid hydrogen in view of recent experimental findings in NMR studies of (ortho)c–(para)₁–c-hydrogen mixtures on boron nitride substrate. Analysis of the temperature-concentration behavior for the observed NMR frequency splitting is given on the basis of a two-dimensional (J = 1)c–(J = 0)₁–c-rotor model with the quadrupolar coupling constant Г₀ = (0.50 ± 0.03) K and the crystalline field amplitude V₀ = (0.70 ± 0.10) K derived from experiment. The two distinct para-rotational short-range ordered structures are described in terms of the local alignment and orientation of the polar principal axis, and are shown to be due to the interplay between the positive and negative crystalline fields. It is shown that the local structures observed below the 2D site-percolation threshold cp = 0.72 are rather different from the ferromagnetic-type para-rotational ordering suggested earlier by Harris and Berlinsky.
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| first_indexed | 2025-11-27T11:30:47Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-128913 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-27T11:30:47Z |
| publishDate | 2003 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Kokshenev, V.B. Sullivan, N.S. 2018-01-14T12:50:58Z 2018-01-14T12:50:58Z 2003 Orientational ordering in monolayers of ortho–para hydrogen / V.B. Kokshenev, N.S. Sullivan // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 980-984. — Бібліогр.: 23 назв. — англ. 0132-6414 PACS: 64.70.Kb, 81.30.Hd https://nasplib.isofts.kiev.ua/handle/123456789/128913 We discuss orientational ordering in monolayers of solid hydrogen in view of recent experimental findings in NMR studies of (ortho)c–(para)₁–c-hydrogen mixtures on boron nitride substrate. Analysis of the temperature-concentration behavior for the observed NMR frequency splitting is given on the basis of a two-dimensional (J = 1)c–(J = 0)₁–c-rotor model with the quadrupolar coupling constant Г₀ = (0.50 ± 0.03) K and the crystalline field amplitude V₀ = (0.70 ± 0.10) K derived from experiment. The two distinct para-rotational short-range ordered structures are described in terms of the local alignment and orientation of the polar principal axis, and are shown to be due to the interplay between the positive and negative crystalline fields. It is shown that the local structures observed below the 2D site-percolation threshold cp = 0.72 are rather different from the ferromagnetic-type para-rotational ordering suggested earlier by Harris and Berlinsky. The authors acknowledge financial support by the CNPq (V.B.K.) and by the NSF-DMR-98 (N.S.S.). en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Physics in Quantum Crystals Orientational ordering in monolayers of ortho–para hydrogen Article published earlier |
| spellingShingle | Orientational ordering in monolayers of ortho–para hydrogen Kokshenev, V.B. Sullivan, N.S. Physics in Quantum Crystals |
| title | Orientational ordering in monolayers of ortho–para hydrogen |
| title_full | Orientational ordering in monolayers of ortho–para hydrogen |
| title_fullStr | Orientational ordering in monolayers of ortho–para hydrogen |
| title_full_unstemmed | Orientational ordering in monolayers of ortho–para hydrogen |
| title_short | Orientational ordering in monolayers of ortho–para hydrogen |
| title_sort | orientational ordering in monolayers of ortho–para hydrogen |
| topic | Physics in Quantum Crystals |
| topic_facet | Physics in Quantum Crystals |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/128913 |
| work_keys_str_mv | AT kokshenevvb orientationalorderinginmonolayersoforthoparahydrogen AT sullivanns orientationalorderinginmonolayersoforthoparahydrogen |