LIGHT SCATTERING FROM POLARITONS IN CENTROSYMMETRIC CRYSTALS

被引：31
作者：
SCOTT, JF
FLEURY, PA
WORLOCK, JM
机构：
[1] Bell Telephone Laboratories, Holmdel
来源：
PHYSICAL REVIEW | 1969年 / 177卷 / 03期
关键词：
D O I：
10.1103/PhysRev.177.1288
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Polaritons in centrosymmetric crystals (SrTiO3 and KTaO3) have been studied by small-angle light scattering induced by external electric fields. Measurements of polariton dispersion curves in SrTiO3 have produced new values for oscillator strengths of the infrared-active phonons. Absence of a measurable k dependence for the linewidth of the ferroelectric" mode bears on the discrepancy between Raman and infrared linewidth measurements previously reported. © 1969 The American Physical Society."
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页码：1288 / &
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