Accession Number:
AD0687538
Title:
Elementary Exvitations in FCC Solid Ortho-Hydrogen,
Descriptive Note:
Research communication no. 54,
Corporate Author:
DOUGLAS ADVANCED RESEARCH LABS HUNTINGTON BEACH CALIF
Personal Author(s):
Report Date:
1968-04-01
Pagination or Media Count:
61.0
Abstract:
An equation of motion formalism is used to give a nonlinear spin-wave treatment of fcc solid ortho-hydrogen. The elementary excitations in ortho-hydrogen are librational waves, which can be treated in a manner similar to spin-waves in magnetism. The excitation spectrum, long-range order, and ground-state energy are calculated. The spin-wave excitations are found to have a nonvanishing effect on both the long-range order and the ground-state energy. But, because of a large energy gap, the spin-wave theory results deviate only slightly from their molecular field values. Author
Descriptors:
Subject Categories:
- Atomic and Molecular Physics and Spectroscopy
- Solid State Physics