Abstract We study the nonequilibrium transport through a parallel-coupled double quantum dot coupled to Luttinger liquid leads using the nonequilibrium Green's function method. A current formula is derived, where the inter-dot tunneling, the intralead interaction, and asymmetric dot-lead coupling are taken into account. The interplay of these interactions on the differential conductance is investigated. The differential conductance of the double-dot system exhibits the coexistence of zero-bias dip and Fano resonance for asymmetric coupling. The zero-bias dip of differential conductance scales onto a single universal curve for different temperature with the same scaling exponent as a system of Kondo dot. As temperature increases, the zero-bias minimum is gradually lifted.

中文翻译：

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耦合到 Luttinger 液体引线的平行双量子点中的 Fano 共振和零偏置异常

摘要 我们使用非平衡格林函数方法研究了通过与 Luttinger 液体引线耦合的平行耦合双量子点的非平衡输运。推导出电流公式，其中考虑了点间隧穿、引线内相互作用和非对称点引线耦合。研究了这些相互作用对微分电导的相互作用。双点系统的微分电导表现出零偏置倾角和非对称耦合的法诺共振共存。微分电导的零偏置下降以与 Kondo 点系统相同的缩放指数缩放到不同温度的单个通用曲线上。随着温度升高，零偏最小值逐渐升高。