Anaya A, Bowman M, Davidović And D
Georgia Institute of Technology, Atlanta, GA 30332, USA.
Phys Rev Lett. 2004 Dec 10;93(24):246604. doi: 10.1103/PhysRevLett.93.246604. Epub 2004 Dec 8.
We discovered that spin-orbit scattering in strongly disordered gold nanojunctions is strongly suppressed relative to that in weakly disordered gold thin films. This property is unusual because in weakly disordered films spin-orbit scattering increases with disorder. Granularity and freezing of spin-orbit scattering inside the grains explains the suppression of spin-orbit scattering. We propose a generalized Elliot-Yafet relation that applies to a strongly disordered granular regime.
我们发现，相对于弱无序金薄膜，强无序金纳米结中的自旋轨道散射受到强烈抑制。这一特性并不寻常，因为在弱无序薄膜中，自旋轨道散射会随无序度增加。晶粒内部自旋轨道散射的粒度效应和冻结现象解释了自旋轨道散射的抑制。我们提出了一个适用于强无序颗粒体系的广义埃利奥特 - 亚费特关系。
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