Bhandari, Rajiv ; Jindal, V. K. ; Pathak, K. N. (1990) Reinvestigation of two-phonon bound states in rare-gas crystals Physical Review B: Condensed Matter and Materials Physics, 42 (14). pp. 9185-9188. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v42/i14/p9185_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.42.9185
Abstract
The existence of two-phonon bound states in rare-gas crystals has been reexamined without resorting to some of the approximations made in the past. The reinvestigation was necessitated due to the failure of the experiments to observe the two-phonon bound states predicted earlier. The present, more-careful calculation gives results for the bound-state energies in close agreement with earlier values. However, the intensity of the bound state has been found to be significantly less in comparison to earlier calculations, as well as in comparison to the intensity of the two-phonon continuum. This may explain the absence of the features related to the two-phonon bound states in the observed experimental results.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 55958 |
| Deposited On: | 22 Aug 2011 13:03 |
| Last Modified: | 22 Aug 2011 13:03 |
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