arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1102.5045cond-mat.mes-hallcond-mat.str-el
收藏

通过具有两个平行Luttinger液体引线的量子点的输运

Transport through a quantum dot with two parallel Luttinger liquid leads

Florian Elste, David Reichman, Andrew Millis

摘要:

我们研究了库仑点-铅相互作用下,通过一个量子点与两个平行的Luttinger液体铅侧耦合的输运。这种几何形状使得能够精确处理引线间库仑相互作用。我们发现,对于对称地设置在两个引线之间的点,两个引线之间的电荷波动的相关性可以导致在库仑阻塞边缘的电流的增强,甚至负微分电导。将点偏离中心或分离导线进一步将增强转换为抑制。

英文摘要:

We study transport through a quantum dot side-coupled to two parallel Luttinger liquid leads in the presence of a Coulombic dot-lead interaction. This geometry enables an exact treatment of the inter-lead Coulomb interactions. We find that for dots symmetrically disposed between the two leads the correlation of charge fluctuations between the two leads can lead to an enhancement of the current at the Coulomb-blockade edge and even to a negative differential conductance. Moving the dot off center or separating the wires further converts the enhancement to a suppression.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑