COUPLING OF ELECTRONIC CHARGE AND SPIN AT A FERROMAGNETIC-PARAMAGNETIC METAL INTERFACE
COUPLING OF ELECTRONIC CHARGE AND SPIN AT A FERROMAGNETIC-PARAMAGNETIC METAL INTERFACE
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DOI：
10.1103/physrevb.37.5312
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发表时间：
1988-04-01
影响因子：
3.7
通讯作者：
SILSBEE, RH
中科院分区：
文献类型：
--
作者：
JOHNSON, M;SILSBEE, RH
微观模型阐明界面电荷-自旋耦合的概念。在铁磁体和顺磁体之间的界面处，自旋子带是松散耦合的，可以为每个子带定义界面电导，并且它们不等价的结果是，从铁磁金属流入顺磁金属的电流将部分自旋极化，即，将具有相关的磁化电流。反之亦然;顺磁性金属中存在的非平衡磁化可以作为顺磁体和铁磁体之间界面上的开路电压来检测。利用这种效应，一种新的技术来测量传导电子弛豫时间的描述。
Microscopic models are presented to elucidate the concept of interfacial charge-spin coupling. At the interface between a ferromagnet and a paramagnet, the spin subbands are loosely coupled, an interfacial conductance may be defined for each, and a result of their inequivalence is that an electric current flowing from a ferromagnetic metal into a paramagnetic metal will be partially spin polarized, ie, will have an associated current of magnetization. The inverse is also true; nonequilibrium magnetization present in a paramagnetic metal can be detected as an open circuit voltage across an interface between the paramagnet and a ferromagnet. Using this effect, a new technique to measure conduction electron relaxation times is described.