TIME-DOMAIN SOFT MODE SPECTROSCOPY

被引：2

作者：

CHENG, LT ^{[1
]}

NELSON, KA ^{[1
]}

机构：

[1] MIT,DEPT CHEM,CAMBRIDGE,MA 02139

来源：

FERROELECTRICS | 1991年 / 117卷 / 1-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/00150199108222398

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The application of impulsive stimulated light scattering, an entirely time-domain form of light scattering spectroscopy, to the study of lattice dynamics in crystals near structural phase transitions is reviewed. Advantages of the time-domain approach are demonstrated for study of lowfrequency, heavily damped, and/or dispersive modes such as soft acoustic phonons. Impulsive stimulated Brillouin and Raman scattering data showing time-dependent oscillations and decay of acoustic and optic phonons, respectively, are presented and explained. Results of experiments on acoustic phonons in uniaxial and incommensurate ferroelectrics are summarized. Time-domain spectrosocopy of soft optic phonons and other overdamped modes is discussed. © 1991, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：1 / 9

页数：9

共 28 条

[1] CRITICAL BEHAVIOR OF MAGNETS WITH DIPOLAR INTERACTIONS .5. UNIAXIAL MAGNETS IN D-DIMENSIONS [J].