Phys. Rev. Lett. 71, 3814–3817 (1993)Remarkable high pressure phase line of orientational order in solid hydrogen deuterideReceived 26 July 1993; published in the issue dated 6 December 1993 We have studied solid HD to pressures in excess of 100 GPa and to liquid helium temperatures. We have found the broken symmetry quantum phase transition of orientational order by means of Raman scattering. The pressure-temperature phase line has a very unusual reentrant behavior, different from the homonuclear isotopes when measured on the same time scale. The phase line is explained in terms of the rapid thermalization of rotational levels with changing temperature. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.71.3814
DOI:
10.1103/PhysRevLett.71.3814
PACS:
62.50.+p, 64.70.Kb, 67.80.Cx, 78.30.Hv
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