THEORY OF MAGNETICALLY ASSISTED INDIRECT TRANSITIONS IN MAGNETIC SEMICONDUCTORS

被引：17

作者：

WHITE, RM

机构：

[1] Department of Physics, Stanford University, Stanford

来源：

PHYSICAL REVIEW LETTERS | 1969年 / 23卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.23.858

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The optical absorption coefficient for ferromagnetic semiconductors has been calculated for an indirect transition in which spin-fluctuation scattering takes the place of the usual phonon scattering. The resulting absorption coefficient is found to be proportional to |SQ→Z|2, where Q→ is the wave-vector difference between the valence-band maximum and the conduction-band minimum. The fact that this decreases with decreasing temperature below the Curie point can lead to an apparent blue shift of the absorption edge similar to what is observed in CdCr2S4. © 1969 The American Physical Society.

引用

页码：858 / &

共 5 条

[1] OPTICAL ABSORPTION OF FERROMAGNETIC AND ANTIFERROMAGNETIC EUROPIUM CHALCOGENIDES [J].