Nearly degenerate time-resolved Faraday rotation in an interacting exciton system

被引：10
|
作者：
Shen, YM [1 ]
Goebel, AM
Khitrova, G
Gibbs, HM
Wang, HL
机构：
[1] Univ Oregon, Dept Phys, Eugene, OR 97403 USA
[2] Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA
来源：
PHYSICAL REVIEW B | 2005年 / 72卷 / 23期
关键词：
D O I：
10.1103/PhysRevB.72.233307
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report experimental studies of nearly degenerate time-resolved Faraday rotation (TRFR) of electron spin precession in an interacting exciton system. We show that many-body interactions between excitons strongly modify the TRFR response through the coupling of the spin coherence to two-exciton states. The striking difference between TRFR and transient differential absorption (DA) further reveals that exciton-exciton interactions play crucial but qualitatively different roles in TRFR and DA.
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页数：4
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