| 磁性多层薄膜系统中的巨磁电阻效应 |
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| 引用本文： | 董正超,赵树宇. 磁性多层薄膜系统中的巨磁电阻效应[J]. 物理学报, 1999, 48(3): 511-519 |
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| 作者姓名： | 董正超 赵树宇 |
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| 作者单位： | 淮阴师范学院物理系，淮阴 223001 |
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| 基金项目： | 江苏省教育委员会基金(批准号：JW970141)资助的课题. |
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| 摘 要： | 考虑到量子尺寸效应以及来自杂质、粗糙表面、粗糙界面三方面的散射，运用量子统计格林函数方法和久保理论，计算了磁性多层薄膜系统中的巨磁电阻，讨论了巨磁电阻随非磁层厚度作周期性振荡，以及在(Fe/Cr)N/Fe系统中巨磁电阻随多层基元数目N增加而增大等现象.理论计算与实验结果符合.此外，还讨论了有关各种散射引起的散射率能否相加的问题.关键词：
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| 关 键 词： | 磁性 多层膜 巨磁电阻效应 薄膜系统 |
| 收稿时间： | 1998-08-10 |
GIANT MAGNETORESISTANCE EFFECTS OF MAGNETIC MULTILAYERED FILMS SYSTEM |
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| DONG ZHENG-CHAO and ZHAO SHU-YU. GIANT MAGNETORESISTANCE EFFECTS OF MAGNETIC MULTILAYERED FILMS SYSTEM[J]. Acta Physica Sinica, 1999, 48(3): 511-519 |
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| Authors: | DONG ZHENG-CHAO and ZHAO SHU-YU |
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| Abstract: | Taking into account the quantum size effects and considering three types of scattering from bulk impurities,rough surfaces and rough interfaces, we use the quantum-statistical Greens function approach and Kubo theory to calculate the giant magnetoresistance (GMR) in magnetic multilayered structures.Our calculations can reproduce the main features of GMR experiment, including the oscillations of GMR with nonmagnetic thickness, and the GMR increases with increasing number of bilayer N of the (Fe/Cr)N/Fe system.Moreover,whether or not additive are the parts of scattering from the impurities, surfaces and interfaces is also discussed. |
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