APS -Annual Meeting of the APS Four Corners Section- Event - Cooling limit of a quantum thermocouple

Marco Antonio Jimenez Valencia; Abhay Shankar C. Shastry; Charles A. Stafford

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APS -Annual Meeting of the APS Four Corners Section- Event - Cooling limit of a quantum thermocouple

机译：APS-APS四角分会年会-活动-量子热电偶的冷却极限

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A quantum thermocouple is investigated beyond linear response using the method of nonequilibrium Green's functions (NEGF). Insights on the maximum cooling power and coldest temperature achievable are calculated through an effective field theory of the interacting pi-electrons which characterize molecular junctions' transport properties. The limits on cooling are determined by the interplay of the Peltier effect and Joule heating. Different junction couplings (such as sequential exchange and super-exchange) in a quantum thermocouple are tested to determine the possibility of achieving the thermodynamic limit of Carnot efficiency.

机译：使用非平衡格林函数（NEGF）方法研究了超出线性响应的量子热电偶。通过对相互作用的π电子的有效场论来计算可达到的最大冷却功率和最冷温度，这些π电子表征了分子结的传输性质。冷却的极限取决于珀耳帖效应和焦耳热的相互作用。测试了量子热电偶中不同的结耦合（例如顺序交换和超交换），以确定达到卡诺效率热力学极限的可能性。

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《Bulletin of the American Physical Society》 |2017年第17期|共页
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Marco Antonio Jimenez Valencia; Abhay Shankar C. Shastry; Charles A. Stafford;
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APS -Annual Meeting of the APS Four Corners Section- Event - Cooling limit of a quantum thermocouple

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