# OBLIQUE PHONONS IN UNIAXIAL CRYSTALS

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/9745

Files Size Format View
1976-RR'-04.jpg 87.24Kb JPEG image

 dc.creator Frech, Roger en_US dc.date.accessioned 2006-06-15T13:47:38Z dc.date.available 2006-06-15T13:47:38Z dc.date.issued 1976 en_US dc.identifier 1976-RR'-4 en_US dc.identifier.uri http://hdl.handle.net/1811/9745 dc.description Author Institution: Department of Chemistry, University of Oklahoma en_US dc.description.abstract Near-normal incidence infrared reflectivity data in uniaxial crystals in which the principal plane is orthogonal to the plane of incidence can be simply decomposed into an extraordinary wave contribution and an ordinary wave contribution. The extraordinary wave contribution is shown to result from an oblique phonon resonance. The symmetry of oblique phonons Is examined by considering the direction of the phonon in the vicinity of the Brillouin zone center (B. Z. C.) $(k \simeq 0)$ rather than the formal symmetry precisely ac the B. Z. C. $(k \simeq 0)$. The apparent mixing of A and E modes which occurs in certain oblique phonons in these uniaxial systems is described in terms of a microscopic model rather than the usual macroscopic model. en_US dc.format.extent 89342 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.title OBLIQUE PHONONS IN UNIAXIAL CRYSTALS en_US dc.type article en_US