Influence of spin-orbit coupling on magneto-optical Kerr effect of a magnetic insulator

被引：6
|
作者：
Zhou, QC [1 ]
Wang, JF
Xu, RQ
机构：
[1] E China Shipbldg Inst, Dept Basic Courses, Zhenjiang 212003, Peoples R China
[2] Huazhong Univ Sci & Technol, Dept Solid State Elect, Wuhan 430074, Peoples R China
[3] E China Shipbldg Inst, Dept Elect & Informat, Zhenjiang 212003, Peoples R China
来源：
ACTA PHYSICA SINICA | 2002年 / 51卷 / 07期
关键词：
magneto-optical Kerr effect; spin-orbit coupling; linear respondence kernel; splitting;
D O I：
10.7498/aps.51.1639
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By using atomic energy-level transition model for local electrons, microscopic quantum expressions of the magneto-optical Kerr rotation (MOKR) are derived, taking into account both spin exchange splitting and spin-orbit coupling interaction. Valiation of the MOKR with the coupling constants of atomic ground state or excited states is investigated for the four-level transition case. Results show that MOKR is not proportional to the spin-orbit coupling splitting energy. It is advantageous to the enhancement of MOKR when the spin-orbit coupling constant of the atomic ground-states is positive or that of the excited states is negative.
引用
收藏
页码：1639 / 1644
页数：6
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