Proximity-Induced Ferromagnetism in Graphene Revealed by the Anomalous Hall Effect

被引：531

作者：

Wang, Zhiyong ^{[1
]}

Tang, Chi ^{[1
]}

Sachs, Raymond ^{[1
]}

Barlas, Yafis ^{[1
]}

Shi, Jing ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 114卷 / 01期

基金：

美国国家科学基金会;

关键词：

BERRY-PHASE; DYNAMICS;

D O I：

10.1103/PhysRevLett.114.016603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate the anomalous Hall effect (AHE) in single-layer graphene exchange coupled to an atomically flat yttrium iron garnet (YIG) ferromagnetic thin film. The anomalous Hall conductance has magnitude of similar to 0.09(2e(2)/h) at low temperatures and is measurable up to similar to 300 K. Our observations indicate not only proximity-induced ferromagnetism in graphene/YIG with a large exchange interaction, but also enhanced spin-orbit coupling that is believed to be inherently weak in ideal graphene. The proximity-induced ferromagnetic order in graphene can lead to novel transport phenomena such as the quantized AHE which are potentially useful for spintronics.

引用

页数：5

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