Spin extraction theory and its relevance to spintronics
Spin extraction theory and its relevance to spintronics
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DOI：
10.1103/physrevlett.98.046602
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发表时间：
2007-01-26
影响因子：
8.6
通讯作者：
Sham, L. J.
中科院分区：
文献类型：
--
作者：
Dery, H.;Sham, L. J.
电子从半导体到铁磁体的抽取以及反向注入的情况都可以用散射理论来表述。然而，在散射理论中必须考虑到在半导体侧掺杂引起的界面处的束缚态的存在。包含的界面状态产生的自旋成像测量，这与目前的理解自旋提取的最近结果的解释。提取理论的自旋电子学的重要性说明了一个自旋开关的应用。
Extraction of electrons from a semiconductor to a ferromagnet as well as the case of injection in the reverse direction may be formulated as a scattering theory. However, the presence of bound states at the interface arising out of doping on the semiconductor side must be taken into account in the scattering theory. Inclusion of the interface states yields an explanation of a recent result of spin-imaging measurement which contradicts the current understanding of spin extraction. The importance of an extraction theory to spintronics is illustrated by an application to a spin switch.