Isotopic and spin-nuclear effects in solid hydrogens (Review Article)
The multiple isotopic family of hydrogens (H₂, HD, D₂, HT, DT, T₂) due to large differences in the de Boer quantum parameter and inertia moments displays a diversity of pronounced quantum isotopic solid-state effects. The homonuclear members of this family (H₂, D₂, T₂) due to the permutation symmetr...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2017 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2017
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/175360 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Isotopic and spin-nuclear effects in solid hydrogens (Review Article) / Y.A. Freiman, Y. Crespo // Физика низких температур. — 2017. — Т. 43, № 12. — С. 1687-1706. — Бібліогр.: 97 назв. — англ. |
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Freiman, Y.A. Crespo, Y. 2021-01-31T20:36:57Z 2021-01-31T20:36:57Z 2017 Isotopic and spin-nuclear effects in solid hydrogens (Review Article) / Y.A. Freiman, Y. Crespo // Физика низких температур. — 2017. — Т. 43, № 12. — С. 1687-1706. — Бібліогр.: 97 назв. — англ. 0132-6414 PACS: 67.80.ff https://nasplib.isofts.kiev.ua/handle/123456789/175360 The multiple isotopic family of hydrogens (H₂, HD, D₂, HT, DT, T₂) due to large differences in the de Boer quantum parameter and inertia moments displays a diversity of pronounced quantum isotopic solid-state effects. The homonuclear members of this family (H₂, D₂, T₂) due to the permutation symmetry are subjects of the constraints of quantum mechanics which link the possible rotational states of these molecules to their total nuclear spin giving rise to the existence of two spin-nuclear modifications, ortho- and parahydrogens, possessing substantially different properties. Consequently, hydrogen solids present an unique opportunity for studying both isotope and spin-nuclear effects. The rotational spectra of heteronuclear hydrogens (HD, HT, DT) are free from limitations imposed by the permutation symmetry. As a result, the ground state of these species in solid state is virtually degenerate. The most dramatic consequence of this fact is an effect similar to the Pomeranchuk effect in ³He which in the case of the solid heteronuclear hydrogens manifests itself as the reentrant broken symmetry phase transitions. In this review article we discuss thermodynamic and kinetic effects pertaining to different isotopic and spin-nuclear species, as well as problems that still remain to be solved. The authors are deeply indebted to Erio Tosatti and Mikhail Strzhemechny for numerous fruitful discussions. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Isotopic and spin-nuclear effects in solid hydrogens (Review Article) Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Isotopic and spin-nuclear effects in solid hydrogens (Review Article) |
| spellingShingle |
Isotopic and spin-nuclear effects in solid hydrogens (Review Article) Freiman, Y.A. Crespo, Y. |
| title_short |
Isotopic and spin-nuclear effects in solid hydrogens (Review Article) |
| title_full |
Isotopic and spin-nuclear effects in solid hydrogens (Review Article) |
| title_fullStr |
Isotopic and spin-nuclear effects in solid hydrogens (Review Article) |
| title_full_unstemmed |
Isotopic and spin-nuclear effects in solid hydrogens (Review Article) |
| title_sort |
isotopic and spin-nuclear effects in solid hydrogens (review article) |
| author |
Freiman, Y.A. Crespo, Y. |
| author_facet |
Freiman, Y.A. Crespo, Y. |
| publishDate |
2017 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
The multiple isotopic family of hydrogens (H₂, HD, D₂, HT, DT, T₂) due to large differences in the de Boer quantum parameter and inertia moments displays a diversity of pronounced quantum isotopic solid-state effects. The homonuclear members of this family (H₂, D₂, T₂) due to the permutation symmetry are subjects of the constraints of quantum mechanics which link the possible rotational states of these molecules to their total nuclear spin giving rise to the existence of two spin-nuclear modifications, ortho- and parahydrogens, possessing substantially different properties. Consequently, hydrogen solids present an unique opportunity for studying both isotope and spin-nuclear effects. The rotational spectra of heteronuclear hydrogens (HD, HT, DT) are free from limitations imposed by the permutation symmetry. As a result, the ground state of these species in solid state is virtually degenerate. The most dramatic consequence of this fact is an effect similar to the Pomeranchuk effect in ³He which in the case of the solid heteronuclear hydrogens manifests itself as the reentrant broken symmetry phase transitions. In this review article we discuss thermodynamic and kinetic effects pertaining to different isotopic and spin-nuclear species, as well as problems that still remain to be solved.
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| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/175360 |
| citation_txt |
Isotopic and spin-nuclear effects in solid hydrogens (Review Article) / Y.A. Freiman, Y. Crespo // Физика низких температур. — 2017. — Т. 43, № 12. — С. 1687-1706. — Бібліогр.: 97 назв. — англ. |
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AT freimanya isotopicandspinnucleareffectsinsolidhydrogensreviewarticle AT crespoy isotopicandspinnucleareffectsinsolidhydrogensreviewarticle |
| first_indexed |
2025-12-07T18:33:10Z |
| last_indexed |
2025-12-07T18:33:10Z |
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1850875461058428928 |