Spin-wave relaxation in diluted magnetic semiconductors within the self-consistent Green's function approach

被引：6
|
作者：
Bunder, J. E. [1 ]
Sun, Shih-Jye
Lin, Hsiu-Hau
机构：
[1] Natl Ctr Theoret Sci, Div Phys, Hsinchu 300, Taiwan
[2] Natl Univ Kaohsiung, Dept Appl Phys, Kaohsiung 800, Taiwan
[3] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan
[4] Natl Ctr Theoret Sci, Div Phys, Hsinchu 300, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 07期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2335666
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors employ a self-consistent Green's function approach to investigate the spin-wave relaxation Gamma(p) in diluted magnetic semiconductors. They find that the trend of the spin-wave relaxation strongly depends on the ratio of the itinerant and impurity spin densities. For density ratios in the Ruderman-Kittel-Kasuya-Yosida phase, Gamma(p) decreases even though thermal fluctuations increase. On the other hand, in the strong coupling phase, an interesting peak structure appears. They discuss the implications of their numerical results for experiments. (c) 2006 American Institute of Physics.
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