All-electrical detection of the relative strength of Rashba and Dresselhaus spin-orbit interaction in quantum wires.
All-electrical detection of the relative strength of Rashba and Dresselhaus spin-orbit interaction in quantum wires.
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DOI：
10.1103/physrevlett.101.266401
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发表时间：
2008-12
影响因子：
8.6
通讯作者：
M. Scheid;M. Kohda;Y. Kunihashi;K. Richter;J. Nitta
中科院分区：
文献类型：
--
作者：
M. Scheid;M. Kohda;Y. Kunihashi;K. Richter;J. Nitta
我们提出了一种不需要拟合参数就能从输运测量中确定Rashba和Dresselhaus自旋轨道相互作用相对强度的方法。为此，我们利用了窄量子线在平面内磁场方向、量子线方向和晶体方向上的电导各向异性。我们通过基于Landauer形式的量子线电导的数值计算来支持我们的建议，这表明该方法适用于广泛的参数范围。
We propose a method to determine the relative strength of Rashba and Dresselhaus spin-orbit interaction from transport measurements without the need of fitting parameters. To this end, we make use of the conductance anisotropy in narrow quantum wires with respect to the directions of an in-plane magnetic field, the quantum wire, and the crystal orientation. We support our proposal by numerical calculations of the conductance of quantum wires based on the Landauer formalism which show the applicability of the method to a wide range of parameters.