Prog. Theor. Phys. Vol. 61 No. 3 (1979) pp. 719-735
Localized Excitations in the Ordered Solid Hydrogen
Department of Material Physics, Faculty of Engineering Science, Osaka University, Osaka 560
(Received November 20, 1978)
The excitations due to a parahydrogen molecule in the ordered state of solid orthohydrogen are studied. The anharmonic processes prove to give significant effects on J=2 rotons. The virtual creation of libron (J=1 excitation) in the vicinity of roton is taken into account with the interactions between roton and libron, where the relevant Green's function is determined self-consistently. The results for Raman intensities are in good agreement with the experiment by Hardy, Silvera and McTague. It is shown that the local perturbation in the presence of a parahydrogen molecule gives appreciable effects on libron. The concentration dependence of the k=0 libron energy at very low concentrations of parahydrogen is also studied in fair agreement with the Raman experiment.
DOI : 10.1143/PTP.61.719
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Citing Article(s) :
Progress of Theoretical Physics Vol. 62 No. 2 (1979) pp. 311-326
Higher Order Effects on the Rotational Excitations in the Ordered Solid Hydrogen
Jun-ichi Igarashi, Motoya Fujio and Tuto Nakamura
Progress of Theoretical Physics Vol. 67 No. 5 (1982) pp. 1290-1304
Theory of the Infrared Absorption in the Ordered Solid Hydrogen