Polariton scattering in potassium dihydrogen phosphate KDP

Raman scattering from polaritons of mixed B/sub 2/-E symmetry has been observed in potassium dihydrogen phosphate at ambient temperatures. An extraordinary polariton branch has been measured at wave-number shifts from 940 cm/sup -1/ at 0.3/sup 0/ of arc internal scattering angle to 1080 cm/sup -1/ a...

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Veröffentlicht in:	Phys. Rev., Sect. B. Condens. Matter; (United States) Sect. B. Condens. Matter; (United States), 1979-01, Vol.19 (2), p.1178-1182
Hauptverfasser:	Zvirgzds, J. A., Habbal, F., Nicola, J. H., Toms, D. J., Scott, J. F.
Format:	Artikel
Sprache:	eng
Schlagworte:	360603 - Materials- Properties ACID PHOSPHATES ALKALI METAL COMPOUNDS DATA DATA FORMS DIELECTRIC MATERIALS ELECTRICAL PROPERTIES EXPERIMENTAL DATA FERROELECTRIC MATERIALS INFORMATION ISOLATED VALUES MATERIALS MATERIALS SCIENCE NUMERICAL DATA OXYGEN COMPOUNDS PHOSPHATES PHOSPHORUS COMPOUNDS PHYSICAL PROPERTIES POLARIZABILITY POLARONS POTASSIUM COMPOUNDS POTASSIUM PHOSPHATES QUASI PARTICLES RAMAN SPECTRA SPECTRA THEORETICAL DATA
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Zusammenfassung:	Raman scattering from polaritons of mixed B/sub 2/-E symmetry has been observed in potassium dihydrogen phosphate at ambient temperatures. An extraordinary polariton branch has been measured at wave-number shifts from 940 cm/sup -1/ at 0.3/sup 0/ of arc internal scattering angle to 1080 cm/sup -1/ at 2.0/sup 0/ internal scattering angle. A formula is derived that relates scattering angle and propogation angle in anisotropic, uniaxial crystals. Experimentally measured frequencies are in good accord with theoretical calculations.
ISSN:	0163-1829
DOI:	10.1103/PhysRevB.19.1178