Low Temperature Physics: 28, 491 (2002); https://doi.org/10.1063/1.1496658 (14 pages)
Физика Низких Температур: Том 28, Выпуск 7 (Июль 2002), c. 691-708    ( к оглавлению , назад )

Elementary excitations in solid oxygen

Yu. A. Freiman

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukrain
E-mail: freiman@ilt.kharkov.ua

H. J. Jodl

Fachbereich Physik, Universität Kaiserslautern, Erwin Schrödinger Strasse, D 67663 Kaiserslautern, Germany
LENS, European Laboratory for Non Linear Spectroscopy, Largo E. Fermi 2, I-50125 Firenze, Italy
E-mail: jodl@physik.uni-kl.de
jodl@lens.unifi.it

Received May 13, 2002

Аннотация

Theoretical results on lattice excitations in solid oxygen at equilibrium vapor pressure are reviewed with the emphasis on the behavior of phonons, librons and magnons in the orientationally and magnetically ordered a-phase. Results on magnetooptics of solid oxygen and their impact on advance of magnetic studies of solid oxygen are briefly reviewed. Some results under discussion are new: among these are theoretical results on the magnon heat capacity, the analysis of the behavior of librons at the a-b transition, anisotropy of the spectrum of magnons.

PACS:
75.50.Ee - Antiferromagnetics
75.50.Xx - Molecular magnets
75.40.-s - Critical-point effects, specific heats, short-range order (see also 65.40.-b Heat capacities of solids)
78.20.Ls - Magnetooptical effects
78.30.-j - Infrared and Raman spectra (for vibrational states in crystals and disordered systems, see 63.20.-e and 63.50.+x respectively)
63.20.-e - Phonons in crystal lattices (for phonons in superconductors, see 74.25.Kc; see also 43.35.Gk Phonons in crystal lattice, quantum acoustics�in acoustics appendix)