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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Large enhancement of thermoelectric effects in a tunneling-coupled parallel DQD-AB ring attached to one normal and one superconducting lead
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Large enhancement of thermoelectric effects in a tunneling-coupled parallel DQD-AB ring attached to one normal and one superconducting lead

机译：在连接到一个正常和一个超导引线的隧道耦合并联DQD-AB环中的热电效应大大提高

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摘要

We theoretically investigate the thermoelectric properties in a tunneling-coupled parallel DQD-AB ring attached to one normal and one superconducting lead. The role of the intrinsic and extrinsic parameters in improving thermoelectric properties is discussed. The peak value of figure of merit near gap edges increases with the asymmetry parameter decreasing, particularly, when asymmetry parameter is less than 0.5, the figure of merit near gap edges rapidly rises. When the interdot coupling strengh is less than the superconducting gap the thermopower spectrum presents a single-platform structure. While when the interdot coupling strengh is larger than the gap, a double-platform structure appears in thermopower spectrum. Outside the gap the peak values of figure of merit might reach the order of 10(2). On the basis of optimizing internal parameters the thermoelectric conversion efficiency of the device can be further improved by appropriately matching the total magnetic flux and the flux difference between two subrings.
机译：理论上，从理论上研究连接到一个正常和一个超导引线的隧道耦合的并联DQD-AB环中的热电性能。讨论了内在和外部参数在提高热电性质方面的作用。优选附近间隙边缘图的峰值随着不对称参数的减小而增加，特别是当不对称参数小于0.5时，近间隙边缘的优异图迅速上升。当interdot耦合力量小于超导间隙时，热电气谱呈现单平台结构。虽然当interdot耦合力量大于间隙时，热量频谱中出现双平台结构。在间隙之外，优点图的峰值可能达到10（2）的顺序。在优化内部参数的基础上，通过适当地匹配两个副之间的磁通差异，可以进一步提高装置的热电转换效率。

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