Derivation and Characteristics of a Generalized Form of Susceptibility Used in the Analysis of Raman Line Shape for an Overdamped Mode

作者: Yasunari Takagi

DOI: 10.1143/JPSJ.47.567

关键词:

摘要: On the basis of Onsager's phenomenological equation motion, generalized form susceptibility is derived. This includes damped harmonic oscillator (DHO), Van Vleck-Weisskopf and Frohlich (VWF) Debye relaxational model as different limiting cases, equivalent to that obtained from Bloch for Ising in a transverse field which are used pseudo-spin KDP-type crystals. Characteristics mutual relations susceptibilities discussed with an emphasis on difference between DHO VWF. For heavily mode, becomes difficult physically interpret since eigenfrequency damping factor may lose their original meaning. In such only important parameter distance origin pole χ(ω) complex ω-plane.

参考文章(22)
Tateyuki Yokota, Yasunari Takagi, Takeshi Shigenari, Digital Control of a Raman Spectrometer by a Small Computer and Its Application to Soft Mode Spectroscopy Japanese Journal of Applied Physics. ,vol. 17, pp. 1643- 1650 ,(1978) , 10.1143/JJAP.17.1643
Yasusada Yamada, Hiroshi Takatera, David L. Huber, Critical Dynamical Phenomena in Pseudospin-Phonon Coupled Systems Journal of the Physical Society of Japan. ,vol. 36, pp. 641- 648 ,(1974) , 10.1143/JPSJ.36.641
R. Blinc, B. Žekš, Dynamics of order-disorder-type ferroelectrics and anti-ferroelectrics Advances in Physics. ,vol. 21, pp. 693- 757 ,(1972) , 10.1080/00018737200101348
Y. Yamada, G. Shirane, A. Linz, Study of Critical Fluctuations in BaTiO3by Neutron Scattering Physical Review. ,vol. 177, pp. 848- 857 ,(1969) , 10.1103/PHYSREV.177.848
B. D. Silverman, Collision-broadened phonon line shape in the overdamped or hydrodynamic regime Physical Review B. ,vol. 9, pp. 203- 208 ,(1974) , 10.1103/PHYSREVB.9.203
M. DiDomenico, S. H. Wemple, S. P. S. Porto, R. P. Bauman, Raman Spectrum of Single-Domain BaTiO3 Physical Review. ,vol. 174, pp. 522- 530 ,(1968) , 10.1103/PHYSREV.174.522
Yasunari Takagi, Takeshi Shigenari, Analysis of Raman Spectra of the Overdamped Mode in KH2(1-x)D2xPO4Crystals with Single-Mode Line Shape Functions Journal of the Physical Society of Japan. ,vol. 47, pp. 576- 584 ,(1979) , 10.1143/JPSJ.47.576
Ronald L. Reese, I. J. Fritz, H. Z. Cummins, Light-Scattering Studies of the Soft Ferroelectric and Acoustic Modes of KD2PO4 Physical Review B. ,vol. 7, pp. 4165- 4185 ,(1973) , 10.1103/PHYSREVB.7.4165
H. FRÖHLICH, Shape of Collision-Broadened Spectral Lines Nature. ,vol. 157, pp. 478- 478 ,(1946) , 10.1038/157478A0