从量子线中的无序重构傅里叶定律
Reconstructing Fourier's law from disorder in quantum wires
摘要：
利用开放量子系统理论研究了不同温度下金属纳米线与引线连接时的局部温度和热流。我们表明，弹道导线的局部温度几乎是均匀的沿导线和傅立叶定律是无效的。通过逐渐增加无序度，在导线内部产生均匀的温度梯度，并且热流与该局部温度梯度线性相关，与傅立叶定律一致。最后，我们表明，虽然无序是负责发病的傅立叶定律，非平衡态能量分布函数是完全由热浴。
英文摘要：
The theory of open quantum systems is used to study the local temperature and heat currents in metallic nanowires connected to leads at different temperatures. We show that for ballistic wires the local temperature is almost uniform along the wire and Fourier's law is invalid. By gradually increasing disorder, a uniform temperature gradient ensues inside the wire and the thermal current linearly relates to this local temperature gradient, in agreement with Fourier's law. Finally, we demonstrate that while disorder is responsible for the onset of Fourier's law, the non-equilibrium energy distribution function is determined solely by the heat baths.
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