Tunable laser spectroscopy of spin injection in ZnMnSe/ZnCdSe quantum structures
Tunable laser spectroscopy of spin injection in ZnMnSe/ZnCdSe quantum structures
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ZnMnSe/ZnCdSe 量子结构中自旋注入的可调谐激光光谱
DOI：
10.1063/1.1508162
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发表时间：
2002
影响因子：
4
通讯作者：
P. Kop’ev
中科院分区：
文献类型：
--
作者：
I. Buyanova;I. Ivanov;B. Monemar;Weimin M. Chen;A. Toropov;Ya. V. Terent’ev;S. Sorokin;A. Lebedev;S. Ivanov;P. Kop’ev
采用磁光光谱技术结合可调谐激光激发研究了ZnMnSe/ZnCdSe量子结构中激子自旋的取向和注入。这种方法使我们能够选择性地创建首选的自旋取向，并分别监测随后的自旋注入从个别自旋状态，从而摆脱光的自旋损失的可能来源。结果表明，有限的自旋极化在一个量子阱中由于自旋注入从ZnMnSe基稀磁半导体（DMS）是不是由有限程度的自旋对准在DMS中，这实际上是完整的，而是发生在随后的过程中。
Magneto-optical spectroscopy in combination with tunable laser excitation is employed to study exciton spin alignment and injection in ZnMnSe/ZnCdSe quantum structures. This approach enables us to selectively create preferred spin orientation and to separately monitor subsequent spin injection from individual spin states, thus shedding light on a possible source of spin loss. It is shown that the limited spin polarization in a nonmagnetic quantum well due to spin injection from a ZnMnSe-based diluted magnetic semiconductor (DMS) is not caused by a limited degree of spin alignment in the DMS, which is in fact complete, but rather occurs during subsequent processes.