Electronic and magneto-optical properties of rare-earth orthoferrites RFeO3 (R = Y, Sm, Eu, Gd and Lu)

被引：59

作者：

Singh, Nirpendra ^{[1
]}

Rhee, Joo Yull ^{[1
]}

Auluck, S. ^{[2
]}

机构：

[1] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

[2] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2008年 / 53卷 / 02期

关键词：

density-functional calculations; orthoferrites; magnetic moments;

D O I：

10.3938/jkps.53.806

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Orthorhombic rare-earth orthoferrites are studied using density-functional theory. The electronic, optical and magneto-optical properties are investigated in both ferromagnetic (FM) and anti-ferromagnetic (AFM) phases. Our calculations show that the antiferromagnetic phase is energetically favorable. The calculated complex Kerr rotation Of YFeO3 is in good agreement with the experimental data. Our calculations yield a value of the magneto-optical Kerr angle between -0.4 to 0.4 degrees. To see the resemblance between the complex Kerr rotation and complex optical conductivity, we also have calculated the diagonal and the off-diagonal components of the optical-conductivity tensor.

引用

页码：806 / 811

页数：6

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