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Interface-dependent magnetotransport properties for thin Pt films on ferrimagnetic Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$

強磁性Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$上のPt薄膜の界面依存磁気輸送特性

塩見 雄毅*; 大谷 隆史*; 井口 敏*; 佐々木 孝彦*; Qiu, Z.*; 中山 裕康*; 内田 健一*; 齊藤 英治

Shiomi, Yuki*; Otani, Takashi*; Iguchi, Satoshi*; Sasaki, Takahiko*; Qiu, Z.*; Nakayama, Hiroyasu*; Uchida, Kenichi*; Saito, Eiji

We have studied magnetoresistance and Hall effects for 1.8-nm-thick Pt films grown on a ferrimagnetic insulator Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$ in a wide temperature (0.46-300 K) and magnetic-field (-15 to 15 T) region. In the low-temperature regime where quantum corrections to conductivity are observed, weak antilocalization behavior observed in Pt films is critically suppressed when the film is attached to Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$. Hall resistance in the Pt film is also affected by Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$, and it exhibits logarithmic temperature dependence in a broad temperature range. The magnetotransport properties in the high-field range are significantly influenced by the interface between Pt and Y$$_{3}$$Fe$$_{5}$$O$$_{12}$$.

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パーセンタイル:73.87

分野:Physics, Applied

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