论文标题
$ \ MATHCAL {PT} $ - 对称非热系统的运输特征：环境互动的影响
Transport characteristics of a $\mathcal{PT}$-symmetric non-Hermitian system: Effect of environmental interaction
论文作者
论文摘要
环境影响是不可避免的，但在研究小型系统的电子传输性能中通常被忽略。这种环境介导的相互作用通常可以通过平衡的物理增益和损失分布平衡的平衡时间对称的非热式系统来描述。文献中众所周知，与常规的连接电流一起，可以根据连接构型在环几何形状中建立另一种称为偏置驱动的圆形电流。此电流（进一步）诱导了一个强的磁场，甚至可以达到几个特斯拉。当系统与周围环境相互作用时，这些数量会发生什么？它会表现出不利的反应吗？我们解决了考虑到两端环几何形状的此类问题，其中在紧密结合框架内描述了连接设置。使用标准绿色的功能形式主义根据Landauer-Büttiker方法评估所有运输量。
The environmental influence is inevitable but often ignored in the study of electronic transport properties of small-scale systems. Such an environment-mediated interaction can generally be described by a parity-time symmetric non-Hermitian system with a balanced distribution of physical gain and loss. It is quite known in the literature that along with the conventional junction current, another current called bias-driven circular current can be established in a loop geometry depending upon the junction configuration. This current, further, induces a strong magnetic field that can even reach to few Tesla. What will happen to these quantities when the system interacts with its surrounding environment? Would it exhibit a detrimental response? We address such issues considering a two-terminal ring geometry where the junction setup is described within a tight-binding framework. All the transport quantities are evaluated using the standard Green's function formalism based on the Landauer-Büttiker approach.
