Spin-filter effect in magnetite nanowire

被引：101

作者：

Liao, Zhi-Min

Li, Ya-Dong

Xu, Jun

Zhang, Jing-Min

Xia, Ke

Yu, Da-Peng ^{[1
]}

机构：

[1] Peking Univ, State Key Lab Mesoscop Phys, Sch Phys, Beijing 100871, Peoples R China

[2] Peking Univ, Electron Miscroscopy Lab, Sch Phys, Beijing 100871, Peoples R China

[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[4] Chinese Acad Sci, Inst Phys, Beijing 10080, Peoples R China

来源：

NANO LETTERS | 2006年 / 6卷 / 06期

关键词：

D O I：

10.1021/nl052199p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Spin-dependent electron transport in individual magnetite (Fe3O4) nanowires contacted with normal metallic electrodes was investigated. Such a configured device demonstrated a spin-filter effect, that is, only the minority spin carriers can transport through the magnetite nanowire due to its negative spin polarization. An anomalous positive magnetoresistance similar to 7.5% is observed at room temperature. Moreover, the magnetoresistance can be controlled via bias voltage.

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收藏

页码：1087 / 1091

页数：5

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