Raman scattering in the quadrupolar ordering phase of CeB6

被引：4

作者：

Nagao, T ^{[1
]}

Igarashi, J ^{[1
]}

机构：

[1] Gunma Univ, Fac Engn, Kiryu, Gumma 3768515, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2002年 / 71卷 / 02期

关键词：

Raman scattering; CeB6; orbital ordering; orbital excitations;

D O I：

10.1143/JPSJ.71.618

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We theoretically investigate the Raman scattering in the quadrupolar ordering phase of CeB6, on the basis of the model Hamiltonian of Shiba et al. Approximating the total susceptibility by a sum of quadrupole moments of each Ce atom, we calculate the Raman spectra corresponding to the orbital excitations in the Gamma8 states within the random phase approximation. We obtain the spectra consisting of several peaks as a function of frequency shift. They are found to depend strongly on the polarization of light. We discuss also the temperature and the magnetic field dependences of the spectra.

引用

页码：618 / 624

页数：7

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