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dc.contributor.author Kokshenev, V.B.
dc.contributor.author Sullivan, N.S.
dc.date.accessioned 2018-01-14T12:50:58Z
dc.date.available 2018-01-14T12:50:58Z
dc.date.issued 2003
dc.identifier.citation 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. uk_UA
dc.identifier.issn 0132-6414
dc.identifier.other PACS: 64.70.Kb, 81.30.Hd
dc.identifier.uri http://dspace.nbuv.gov.ua/handle/123456789/128913
dc.description.abstract 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. uk_UA
dc.description.sponsorship The authors acknowledge financial support by the CNPq (V.B.K.) and by the NSF-DMR-98 (N.S.S.). uk_UA
dc.language.iso en uk_UA
dc.publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України uk_UA
dc.relation.ispartof Физика низких температур
dc.subject Physics in Quantum Crystals uk_UA
dc.title Orientational ordering in monolayers of ortho–para hydrogen uk_UA
dc.type Article uk_UA
dc.status published earlier uk_UA


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