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arXiv 0901.0338cond-mat.str-el
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磁场中强相互作用环的电导

Conductance through strongly interacting rings in a magnetic field

Julián Rincón, A. A. Aligia, K. Hallberg

摘要:

本文研究了相互作用电子在两个任意位置与非相互作用电子弱耦合的有限Aharonov-Bohm环的电导。该模型可以描述与点间重叠相比具有大的充电能量的量子点阵列。由于自旋-电荷分离,这发生在这些高度相关的系统中,透射率示出为目前的磁通量穿透环的特定值的显着下降。我们通过数值和分析手段分析了这种效应,并表明零温度平衡电导实际上呈现出这些可以在实验中观察到的显著特征。

英文摘要:

We study the conductance through finite Aharonov-Bohm rings of interacting electrons weakly coupled to non-interacting leads at two arbitrary sites. This model can describe an array of quantum dots with a large charging energy compared to the interdot overlap. As a consequence of the spin-charge separation, which occurs in these highly correlated systems, the transmittance is shown to present pronounced dips for particular values of the magnetic flux piercing the ring. We analyze this effect by numerical and analytical means and show that the zero-temperature equilibrium conductance in fact presents these striking features which could be observed experimentally.

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。

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