论文标题
部分可观测时空混沌系统的无模型预测
Thermovoltage and heat dissipation in a triangle quantum dot junction
论文作者
论文摘要
我们使用Anderson模型中的非平衡绿色功能方法来研究与金属电极连接到金属电极的三角量子点的热电特性。计算了库仑阻滞机制，热电电压，热电流和热量耗散的运动方程。结果表明，热电电压和热电流具有非线性行为，并且可以用位点能量和量子点的耦合强度来控制它们的大小和迹象。此外，我们发现，对于所有量子点的所有位点能量，热电流是非线性和不对称的偏置电压符号。分析表明，所有位点能量的热电流可能为正或负，而对于非零电压可能为零。这些结果对于确定纳米级电子设备的性能很有用，以控制热量耗散。
We numerically investigate the thermoelectric properties of a triangle quantum dot connected to metallic electrodes using the non-equilibrium Green's function method in the Anderson model. Exploiting the equation of motion method in the Coulomb-blockade regime, the thermovoltage, thermocurrent and heat dissipation are calculated. Results show that the thermovoltage and thermocurrent have nonlinear behavior, and the magnitude and sign of them can be controlled with site energy and coupling strength of quantum dots. Moreover, we find that the heat current is nonlinear and asymmetric respect to the sign of bias voltage for all of the site energies of quantum dots. Analyses show that the heat current can be positive or negative for all of the site energies and becomes zero for the nonzero voltages. These results can be useful to determine the performance of the nanoscale electronic devices to control the heat dissipations.
