QUANTUM BEATS OF ELECTRON LARMOR PRECESSION IN GAAS WELLS

被引：177
|
作者：
HEBERLE, AP [1 ]
RUHLE, WW [1 ]
PLOOG, K [1 ]
机构：
[1] MAX PLANCK INST FESTKORPERFORSCH,D-70506 STUTTGART,GERMANY
来源：
PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.72.3887
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We observe quantum beats in the time-resolved photoluminescence of GaAs quantum wells in a magnetic field perpendicular to the growth direction. These beats originate from Larmor precession of electron spins and show a coherence time of 500 ps, which is much longer than the optical dephasing time of 7 ps. The long coherence time allows us to determine the electron Lande g factors with an accuracy better than 1%.
引用
收藏
页码：3887 / 3890
页数：4
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