Orientational order in solid hydrogen at reduced ortho concentration

N. S. Sullivan, H. Vinegar, R. V. Pound

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The splitting of the NMR line in solid hydrogen has been observed during 145 h while it aged at temperatures below 0.1°K. For ortho-hydrogen mole fractions X less than 0.55, the NMR splitting is present but disappears abruptly at transition temperatures fitting a straight line Tc=(0.54 0.06)X+(0.02 0.02). The concentration dependence of the splitting is compared to a model which includes only a zero-point admixture to the J=0 ground state from the J=1 wave functions of the libron band, and a zero-point admixture of the J=3 state, both of which admixtures scale according to the observed concentration dependence of the transition temperature.

Original languageEnglish
Pages (from-to)2596-2600
Number of pages5
JournalPhysical Review B
Issue number7
StatePublished - 1 Jan 1975
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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