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中国物理学会期刊

嵌入耦合量子点的介观Aharonov-Bohm环内的持续电流

CSTR: 32037.14.aps.53.2336

The persistent current in a mesoscopic Aharonov-Bohm ring with a series-coupled double quantum dot

CSTR: 32037.14.aps.53.2336
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  • 使用双杂质的Anderson模型的哈密顿量,从理论上研究了一个嵌入耦合量子点的介观Aharonov-Bohm环系统处在Kondo区时的基态性质, 并用slave-boson平均场方法求解了哈密顿量. 结果表明, 在这个系统中, 宇称效应和复杂的电流相位关系的出现反映了两个量子点可以相干耦合.

     

    We study theoretically the properties of the ground state of a mescopic ring with a seriescoupled double quantum dot in the Kondo regime by means of the two-inpurity Anderson Hamiltonian. The Hamiltonian is solved by means of the slave-boson mean-field theory. It is shown that two dots can be coupled coherently, which is reflected in the appearance of parity effects and the complex current-phase relation in this system. This system might be a possile candidate for future device applications.

     

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