论文标题
在横向磁场的存在下，管状纳米线的热电特性
Thermoelectric properties of tubular nanowires in the presence of a transverse magnetic field
论文作者
论文摘要
我们计算与电子相关的电荷和热电流，该电流由温度梯度和化学势差产生，而在垂直于其轴的外部磁场存在下，管状纳米线的两端之间的两端是30 nm半径的。我们考虑基于半导体材料的纳米线，并使用Landauer-Bttiker方法来计算运输量。我们获得了Seebeck系数（$ S $），导热率Kappa和功绩图（$ ZT $）的变化，相对于最高20 \，K的温度，磁场最高为3 t。我们特别表明，SeeBeck系数可以在此域中在此域中改变符号。另外，当磁场增加时，$κ$和$ ZT $具有振荡。这些振荡取决于电子的能量光谱。
We calculate the charge and heat current associate with electrons, generated by a temperature gradient and chemical potential difference between two ends of a tubular nanowire of 30 nm radius in the presence of an external magnetic field perpendicular to its axis. We consider a nanowire based on a semiconductor material, and use the Landauer-Bttiker approach to calculate the transport quantities. We obtain the variation of the Seebeck coefficient ($S$), thermal conductivity kappa, and the figure of merit ($ZT$), with respect to the temperature up to 20\,K, and with the magnetic field up to 3 T. In particular we show that the Seebeck coefficient can change sign in this domain of parameters. In addition $κ$ and $ZT$ have oscillations when the magnetic field increases. These oscillations are determined by the energy spectrum of the electrons.
