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Experimental Study of Surface Optical Modes in Ionic Crystal Slabs
Author(s) -
Bryksin V. V.,
Gerbstein Yu. M.,
Mirlin D. N.
Publication year - 1972
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220510248
Subject(s) - crystal (programming language) , reflection (computer programming) , anharmonicity , dispersion (optics) , materials science , ionic crystal , dielectric , ionic bonding , surface (topology) , optics , halide , molecular physics , chemistry , analytical chemistry (journal) , condensed matter physics , optoelectronics , physics , ion , geometry , inorganic chemistry , organic chemistry , mathematics , computer science , programming language , chromatography
Surface optical vibrations have been revealed and investigated in slabs of a number of alkali halide crystals and crystals of CaF 2 and CdF 2 . The measurements were carried out by the attenuated total reflection technique. The frequency dependence of reflection coefficient has been calculated in accordance with the experimental set‐up. For NaCl and CaF 2 crystals dispersion curves of the surface modes have been measured at room and liquid nitrogen temperatures. The comparison of experimental and calculated data shows that the anharmonic term of the dielectric constant should be taken into account in the calculation of the surface modes.