...
首页> 外文期刊>Physica status solidi, B. Basic research >Andreev reflection in a triple quantum dot system coupled with a normal-metal and a superconductor
【24h】

Andreev reflection in a triple quantum dot system coupled with a normal-metal and a superconductor

机译:与正常金属和超导体耦合的三量子点系统中的安德列夫反射

获取原文
获取原文并翻译 | 示例
           

摘要

Using the nonequilibrium green's function method, the electronic transport through a triple quantum dot system due to Andreev reflections (AR) is investigated theoretically. By adjusting systematic parameters, such as the interdot coupling and side-coupled dots' levels, we find that the AR conductance shows the Dicke effect in optics, in which the transition from subradiant state to superradiant state (and vice versa) takes place, and the AR transmission has the symmetric relation due to electron-hole symmetry. The property of the AR current versus the bias voltage is also discussed, the plateaus appear in the current graphics, and the interval and width of the plateaus are changed by tuning the interdot hopping and side-coupled dots' levels. This provides an efficient mechanism for controlling the conductance and current.
机译:使用非平衡格林函数方法,从理论上研究了由于安德列夫反射(AR)引起的通过三重量子点系统的电子传输。通过调整系统参数,例如点间耦合和侧面耦合点的电平,我们发现AR电导在光学中表现出迪克效应,其中发生了从亚辐射态到超辐射态的转变(反之亦然),并且由于电子-空穴对称性,AR透射具有对称关系。还讨论了AR电流与偏置电压之间的关系,高原出现在当前图形中,高原的间隔和宽度通过调整点间跳变和侧耦合点的电平来改变。这提供了用于控制电导和电流的有效机制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号