严格零热偏压下热流的产生与控制
Emergence and control of heat current from strict zero thermal bias
摘要：
开发用于控制能量传输的纳米器件是一个不断增长的挑战。一个悬而未决的问题是，我们是否可以创建和控制热流在{ \it严格零热偏压}，如果是的话，如何做到这一点，在本文中，我们证明了一个非线性不对称系统，当推出平衡，可以产生热流在没有热偏压。在很宽的参数范围内的热流的出现和控制进行了研究。我们的结果揭示了以下三个必要条件：非平衡源，对称性破缺和非线性。我们还表明，当热浴相关，对称性破缺是足以产生热流。
英文摘要：
It is an ever-growing challenge to develop nano-devices for controlling energy transport. An open question is whether we can create and control heat current at {\it strict zero thermal bias}, and if yes, how to do it. In this paper, we demonstrate that a nonlinear asymmetric system, when pushed out of equilibrium, can produce heat current in the absence of a thermal bias. The emergence and control of heat current over a broad range of parameters are studied. Our results reveal the following three necessary conditions: non-equilibrium source, symmetry breaking, and nonlinearity. We also demonstrate that when heat baths are correlated, symmetry breaking is sufficient to generate heat current.
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