Abstract
We study the bound state condition for two phonons in the response function appropriate to second order Raman scattering in a zig-zag chain. Using a potential appropriate to polyethylene we find that a bound state exists just above the maximum in the two phonon spectrum. The binding energy is, however, extremely small (0̌.05cm-1).
Original language | English (US) |
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Pages (from-to) | 625-627 |
Number of pages | 3 |
Journal | Journal of Physics and Chemistry of Solids |
Volume | 39 |
Issue number | 6 |
DOIs | |
State | Published - 1978 |