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物理学报. 1994, 43(1): 110-117.
doi: 10.7498/aps.43.110.
平行与垂直磁化下多层磁膜巨磁电阻与外磁场关系的唯象理论计算
- 收稿日期: 1993-03-18
- 刊出日期: 1994-01-20
摘要: 用Ｃａｍｌｅｙ和Ｂａｒｎａｓ等人的唯象理论方法，计算了相邻铁层间具有反铁磁耦合的层数较多的Ｆｅ／Ｃｒ多层膜，在外磁场平行和垂直于膜面情况下的磁电阻与外磁场的关系，并与实验结果作了比较，符合得较好。在计算中利用对称性条件，对Ｃａｍｌｅｙ和Ｂａｒｎａｓ等人的理论进行了简化，求出了电子分布函数和磁电阻的显式解。
English Abstract
THEORETICAL CALCULATIONS OF THE RELATION BETWEEN THE GIANT MAGNETORESISTANCE IN Fe/Cr SUPERLATTICES
- Received Date:
18 March 1993
- Published Online:
20 January 1994
Abstract: Based on the phenomenological theory of Camley and Barnas and coworkers (C-B), the dependence of magnetoresistance in Fe/Cr multilayers on the applied magne-tic field is calculated. In these multilayers an antiferromagnetic coupling exists between any two adjacent Fe-layers. The applied magnetic field is either parallel or perpendicular to the layers. Good agreement of the calculated results with the experimental ones is found. The symmetry implicitly involved in the C-B theory is disclosed and is used to simplify the original C-B formalism, this leads to the closed expressions for the distribution function of conducting electrons and for magnetore-sistance.
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