Abstract
The phonon dispersion curves of the localized modes associated with a screw dislocation in a model simple cubic lattice are calculated by employing the approach of Tewary (1974) and by numerical evaluation of the Green function. The imperfect-lattice Green function for the model crystal containing a random array of screw dislocations is derived, and with it an expression for the cross section for inelastic neutron scattering by the dislocation-associated modes is found. The numerical evaluation of the cross section and of the frequency shifts away from the one-dislocation values has been carried out for several scattering directions. The calculations are performed over a range of values of the free parameters: the dislocation density and the longitudinal and transverse force-constants.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
