Anomalous Hall effect in Fe/Gd bilayers

被引：31
|
作者：
Xu, W. J. [1 ,2 ]
Zhang, B. [3 ]
Liu, Z. X. [1 ,2 ]
Wang, Z. [1 ,2 ]
Li, W. [1 ,2 ]
Wu, Z. B. [4 ]
Yu, R. H. [5 ]
Zhang, X. X. [3 ]
机构：
[1] Hong Kong Univ Sci & Technol, Dept Physis, Kowloon, Hong Kong, Peoples R China
[2] Hong Kong Univ Sci & Technol, Inst Nanosci & Technol, Kowloon, Hong Kong, Peoples R China
[3] 4700 King Abdullah Univ Sci & Technol KAUST, Image Characterizat Core Lab, Thuwal 239006900, Saudi Arabia
[4] Tsinghua Univ, Dept Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China
[5] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
来源：
EPL | 2010年 / 90卷 / 02期
基金：
美国国家科学基金会;
关键词：
MAGNETOTRANSPORT;
D O I：
10.1209/0295-5075/90/27004
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Non-monotonic dependence of anomalous Hall resistivity on temperature and magnetization, including a sign change, was observed in Fe/Gd bilayers. To understand the intriguing observations, we fabricated the Fe/Gd bilayers and single layers of Fe and Gd simultaneously. The temperature and field dependences of longitudinal resistivity, Hall resistivity and magnetization in these films have also been carefully measured. The analysis of these data reveals that these intriguing features are due to the opposite signs of Hall resistivity/or spin polarization and different Curie temperatures of Fe and Gd single-layer films. Copyright (C) EPLA, 2010
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页数：6
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