Physics – Condensed Matter – Materials Science
Scientific paper
2010-01-11
EPL Volume 90, Number 2, April 2010
Physics
Condensed Matter
Materials Science
27pages, including 15 page text and 12 page figures; http://epljournal.edpsciences.org/index.php?option=com_article&access=sta
Scientific paper
10.1209/0295-5075/90/27004
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.
Li Wangrong
Liu Zhen-Xing
Wang Ziqiang
Wu Zuo-Bing
Xu Jack Wentao
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