Department of Physics, Indian Institute of Technology-Kanpur, Kanpur-208 016, India.
J Phys Condens Matter. 2012 Aug 29;24(34):345301. doi: 10.1088/0953-8984/24/34/345301. Epub 2012 Jul 31.
The thermoelectric coefficients of a two dimensional electron gas (2DEG) with the Rashba spin-orbit interaction (SOI) are presented here. In the absence of a magnetic field, thermoelectric coefficients are enhanced due to the Rashba SOI. In the presence of a magnetic field, the thermoelectric coefficients of spin-up and spin-down electrons oscillate with different frequencies and produces beating patterns in the components of the total thermoelectric power and the total thermal conductivity. We also provide analytical expressions for the thermoelectric coefficients to explain the formation of the beating pattern. We obtain a simple relation which determines the strength of the Rashba SOI if the magnetic fields corresponding to any two successive beat nodes are known from the experiment.
本文提出了二维电子气（2DEG）中具有拉什巴自旋轨道相互作用（SOI）的热电系数。在没有磁场的情况下，由于拉什巴 SOI，热电系数得到增强。在存在磁场的情况下，自旋向上和自旋向下电子的热电系数以不同的频率振荡，并在总热电功率和总热导率的分量中产生拍频图案。我们还提供了热电系数的解析表达式，以解释拍频图案的形成。如果从实验中已知任意两个连续拍频节点对应的磁场，则可以得到一个简单的关系，该关系确定拉什巴 SOI 的强度。
