Second-harmonic-generation spectra of the hexagonal manganites RMnO3

被引：46

作者：

Iizuka-Sakano, T

Hanamura, E

Tanabe, Y

机构：

[1] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

[2] Chitose Inst Sci & Technol, Chitose City, Hokkaido 0668655, Japan

[3] Japan Sci & Technol Corp, JST, CREST, Chitose City, Hokkaido 0668655, Japan

[4] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2001年 / 13卷 / 13期

关键词：

D O I：

10.1088/0953-8984/13/13/316

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Non-linear susceptibilities for use in describing the second-harmonic generation (SHG) recently observed in the hexagonal manganites RMnO3 (R = Sc, Y, Ho, Er, Tm, Yb, Lu) below the Neel temperature TN are derived. Their explicit expressions show that they should give rise to quite different spectra according to whether the magnetic ordering is P6 ' (3)cm ' or P6 ' (3)c 'm. The excited states around 2.45 eV are treated as excitons in the antiferromagnetic phase. The calculated SHG spectra are compared with experiments and it is found that they can be used to explain the observed features and spectra satisfactorily.

引用

页码：3031 / 3055

页数：25

共 18 条

[1] MAGNETIC DAVYDOV SPLITTINGS IN OPTICAL ABSORPTION SPECTRUM OF CR2O3 [J].