Quantum and Classical Orientational Ordering in Solid Hydrogen

Preprint

17 January 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9605083

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.

Keywords

CLASSICAL ORIENTATIONAL
ORIENTATIONAL ORDERING
OSCILLATOR STRENGTH
LINEAR IN THE ORDER
SOLID HYDROGEN
UNIFIED VIEW
VIBRON

All Related Versions

Version 1, 1996-05-14, ArXiv
Version 2, 1997-01-17, ArXiv
Published version: Physical Review Letters, 78 (6), 1066.

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