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

页码：3887 / 3890

页数：4

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