Enhancement of spin polarization in a transition metal oxide ferromagnetic nanodot diode.
Enhancement of spin polarization in a transition metal oxide ferromagnetic nanodot diode.
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DOI：
10.1021/nl102601m
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发表时间：
2011-02
期刊：
影响因子：
10.8
通讯作者：
S. Yamanaka;T. Kanki;T. Kawai;Hidekazu Tanaka
中科院分区：
文献类型：
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作者：
S. Yamanaka;T. Kanki;T. Kawai;Hidekazu Tanaka
在过渡金属氧化物(Fe,Zn)(3)O(4)/Nb-SrTiO(3)铁磁纳米点肖特基二极管中观察到自旋极化增强。高度集成的氧化物纳米点二极管是使用基于钼剥离方法的纳米压印光刻技术与脉冲激光沉积技术相结合构建的。二极管的结磁阻随着二极管尺寸的增加而增加。根据热离子发射模型估计的自旋极化从传统薄膜中的 P = 0.74 增强到尺寸为 300 × 300 nm 的纳米点二极管中的 P = 0.89(2)。这里使用的纳米制造技术将使我们能够构建优异的过渡金属氧化物自旋电子纳米材料和纳米器件。
Enhancement of spin polarization was observed in a transition metal oxide (Fe,Zn)(3)O(4)/Nb-SrTiO(3) ferromagnetic nanodot Schottky diode. The highly integrated oxide nanodot diodes were constructed using nanoimprint lithography based on a Mo lift-off method in combination with a pulsed laser deposition technique. The junction magnetoresistance of diodes increased as diode size increased. The spin polarization estimated from the thermionic emission model is enhanced from P = 0.74 in a conventional film to P = 0.89 in a nanodot diode whose size is 300 × 300 nm(2). The nanofabrication technique used here will enable us to construct superior transition metal oxide spintronic nanomaterial and nanodevices.