Electron spin dynamics and optical orientation of Mn2+ ions in GaAs
Electron spin dynamics and optical orientation of Mn2+ ions in GaAs
复制标题
GaAs 中 Mn2 离子的电子自旋动力学和光学取向
DOI:
10.1063/1.4795527
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
M. Bayer
中科院分区:
文献类型:
--
作者:
I. Akimov;R. I. Dzhioev;V. L. Korenev;Y. Kusrayev;V. Sapega;D. Yakovlev;M. Bayer
We present an overview of spin-related phenomena in GaAs doped with low concentration of Mn-acceptors (below 1018 cm−3). We use the combination of different experimental techniques such as spin-flip Raman scattering and time-resolved photoluminescence. This allows to evaluate the time evolution of both electron and Mn spins. We show that optical orientation of Mn ions is possible under application of weak magnetic field, which is required to suppress the manganese spin relaxation. The optically oriented Mn2+ ions maintain the spin and return part of the polarization back to the electron spin system providing a long-lived electron spin memory. This leads to a bunch of spectacular effects such as non-exponential electron spin decay and spin precession in the effective exchange fields.
影响因子:
8.6
作者:
Kikkawa, JM;Awschalom, DD
通讯作者:
Awschalom, DD