论文标题
当前噪声频谱的机理在非临床围点系统中
Mechanism of current noise spectrum in a nonequilibirum Kondo dot system
论文作者
论文摘要
我们基于精确的消散 - 运动评估，系统地研究了量子噪声谱的非平衡性近代机制。通过比较平衡和非平衡情况之间的噪声光谱以及非kondo和kondo机制之间的噪声光谱，我们确定了当前噪声频谱中的非平衡昆多特征，该特征出现在[-ev，ev，ev] $的$ω\ in [-ev] $中。 $ω= \ pm ev = \ pm（μ_ {\ rm l}-μ_ {\ rm rm r}）$分别在$ s（ω）$和$ s（ω）/dΩ$中以$ s的峰值和显着峰。这些功能起源于运输电流动力学的RABI干扰，伴随$ | ev | $的近振荡频率。未成年人但非常明显的拐点，超过$ω= -ev $至$ω=+eV $，将与两个近托共振通道之间的近野狂干扰有关。
We systematically study the nonequilibirum Kondo mechanisms of quantum noise spectrum based on the accurate dissipaton--equation--of--motion evaluations. By comparing the noise spectra between the equilibrium and nonequilibrium cases and between the non-Kondo and Kondo regimes, we identify the nonequilibrium Kondo features in the current noise spectrum, appearing in the region of $ω\in [-eV, eV]$. The Kondo characteristic at $ω=\pm eV=\pm (μ_{\rm L}-μ_{\rm R})$ display asymmetrical upturns and remarkable peaks in $S(ω)$ and $dS(ω)/dω$, respectively. These features are originated from the Rabi interference of the transport current dynamics, with the Kondo oscillation frequency of $|eV|$. The minor but very distinguishable inflections, crossing over $ω=-eV$ to $ω=+eV$, would be related to a sort of Kondo-Fano interference between two Kondo resonances channels.
