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Resonant tunnelling in interacting 1D systems with an AC modulated gate

机译:一维系统与交流调制门之间的共振隧穿

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We present an analysis of transport properties of a system consisting of two half-infinite interacting one-dimensional wires connected to a single fermionic site, the energy of which is subject to a periodic time modulation. Using the properties of the exactly solvable Toulouse point we derive an integral equation for the localised level Keldysh Green's function, which governs the behaviour of the linear conductance. We investigate this equation numerically and analytically in various limits. The period-averaged conductance G displays a surprisingly rich behaviour depending on the parameters of the system. The most prominent feature is the emergence of an intermediate temperature regime at low frequencies, where G is proportional to the line width of the respective static conductance saturating at a non-universal frequency dependent value at lower temperatures. (C) 2004 Elsevier Ltd. All rights reserved.
机译:我们提出了一个系统的传输特性的分析,该系统由两个半无限相互作用的一维线连接到单个铁离子位点组成,其能量受到周期性的时间调制。利用可精确求解的图卢兹点的性质,我们推导了局部能级Keldysh Green函数的积分方程,该方程控制线性电导的行为。我们在各种限制下以数值和分析方式研究此方程。周期平均电导G根据系统参数显示出令人惊讶的丰富行为。最突出的特征是在低频出现中间温度状态,其中G与在较低温度下以非通用频率相关值饱和的各个静态电导的线宽成比例。 (C)2004 Elsevier Ltd.保留所有权利。

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