Exact many-electron scattering states in a parallel-coupled double quantum-dot system

被引：5
作者：
Nishino, A. [1 ]
Imamura, T. [2 ]
Hatano, N. [3 ]
机构：
[1] Kanagawa Inst Technol, 1030 Shimo Ogino, Atsugi, Kanagawa 2430292, Japan
[2] Univ Tokyo, Res Ctr Adv Sci & Technol, Meguro ku, Tokyo 1538904, Japan
[3] Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan
来源：
7TH INTERNATIONAL CONFERENCE ON QUANTUM THEORY AND SYMMETRIES (QTS7) | 2012年 / 343卷
关键词：
TRANSPORT;
D O I：
10.1088/1742-6596/343/1/012087
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study a parallel-coupled double quantum-dot (PDQD) system with both intradot and interdot Coulomb interactions by constructing many-electron scattering eigenstates explicitly. We obtain exact solutions of the two-electron scattering eigenstates whose incident states are plane-wave states. We find that, as a result of the Coulomb interactions, many-body bound states appear in the scattering eigenstates. The binding strength of the many-body bound states is shown to depend on the difference of gate energies of the two quantum dots, which is interpreted as an effect of geometrical interference.
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页数：7
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