Exact scattering eigenstates, many-body bound states, and nonequilibrium current in an open quantum dot system.
Exact scattering eigenstates, many-body bound states, and nonequilibrium current in an open quantum dot system.
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DOI：
10.1103/physrevlett.102.146803
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发表时间：
2009-04
影响因子：
8.6
通讯作者：
A. Nishino;T. Imamura;N. Hatano
中科院分区：
文献类型：
--
作者：
A. Nishino;T. Imamura;N. Hatano
我们得到了一个开放量子点系统中精确的多体散射本征态。散射态不是Bethe本征态的形式，即入射平面波的波数集在散射过程中不守恒，出现多体束缚态。利用量子点的散射态，研究了在有限偏压下量子点的平均非平衡电流。考虑两体束缚态后得到的电流-电压特性与几个已知结果定性相似。
We obtain an exact many-body scattering eigenstate in an open quantum dot system. The scattering state is not in the form of the Bethe eigenstate in the sense that the wave number set of the incoming plane wave is not conserved during the scattering and many-body bound states appear. By using the scattering state, we study the average nonequilibrium current through the quantum dot under a finite bias voltage. The current-voltage characteristics that we obtained by taking the two-body bound state into account is qualitatively similar to several known results.