Quantum and Classical Orientational Ordering in Solid Hydrogen
Condensed Matter
2009-10-28 v2
Abstract
We present a unified view of orientational ordering in phases I, II, and III of solid hydrogen. Phases II and III are orientationally ordered, while the ordering objects in phase II are angular momenta of rotating molecules, and in phase III the molecules themselves. This concept provides quantitative explanation of the vibron softening, libron and roton spectra, and increase of the IR vibron oscillator strength in phase III. The temperature dependence of the effective charge parallels the frequency shifts of the IR and Raman vibrons. All three quantities are linear in the order parameter.
Cite
@article{arxiv.cond-mat/9605083,
title = {Quantum and Classical Orientational Ordering in Solid Hydrogen},
author = {I. I. Mazin and R. J. Hemley and A. F. Goncharov and M. Hanfland and H. -K. Mao},
journal= {arXiv preprint arXiv:cond-mat/9605083},
year = {2009}
}
Comments
Replaced with the final text, accepted for publication in PRL. 1 Fig. added. Misc. text revisions