Spin-wave dynamics in real crystals

被引：61

作者：

Niu, Q ^{[1
]}

Kleinman, L ^{[1
]}

机构：

[1] Univ Texas, Dept Phys, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.80.2205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We derive the spin-wave dynamics in crystals from the time-dependent variational principle, which involves Berry phase terms as well as the energy of frozen spin waves. The general formulation is based on the adiabatic and harmonic approximations. Formulas for ferromagnets and antiferromagnets are derived in terms of Kohn-Sham wave functions, which are particularly suitable for practical ab initio calculations.

引用

页码：2205 / 2208

页数：4

共 10 条

[1]

Aharoni A., 1996, INTRO THEORY FERROMA

[2] Spin dynamics in magnets: Equation of motion and finite temperature effects [J].