论文标题
相位和热驱动的传输跨T形双量子点Josephson连接
Phase and Thermal Driven Transport across T-Shaped Double Quantum Dot Josephson Junction
论文作者
论文摘要
通过使用Keldysh非平衡绿色运动技术方程，分析了T形无相关双量子点Josephson连接的相位和热驱动的传输性能。在此设置中，我们已经表明，侧连接的量子点为电子传输提供了额外的途径，该途径通过调整主点和侧点之间的互点跳跃来影响传输属性。我们首先调查了InterDot跳跃对Andreev Bound State和Josephson Supercurrent的影响。当在超导导线上施加小的热偏置时，该系统表现出有限的热响应，这主要是由于热诱导的准粒子电流引起的。检查了约瑟夫森超电流和流过量子点的准粒子电流的行为，以实现各种互冲跳和热偏置。最后，在开路构型中考虑了系统，其中热驱动的准粒子电流由相机的约瑟夫森超电流补偿，并且观察到嗜热层效应。研究了Interdot跳跃和量子点能级的位置对室内舒适系数的影响
The phase and thermal driven transport properties of the T-shaped uncorrelated double quantum dot Josephson junction are analyzed by using Keldysh non-equilibrium Green's function equation of motion technique. In this setup, we have shown that the side-attached quantum dot provides an additional route for electron transmission which is affecting the transport properties by adjusting the interdot hopping between the main dot and the side dot. We began with investigating the impact of interdot hopping on Andreev bound states and Josephson supercurrent. When a small thermal bias is applied across the superconducting leads, the system exhibits a finite thermal response which is primarily due to the, thermally induced, quasi-particle current. The behavior of the Josephson supercurrent and the quasi-particle current flowing through the quantum dots is examined for various interdot hopping and thermal biasing. Finally, the system is considered in an open circuit configuration where the thermally driven quasi-particle current is compensated by the phase-driven Josephson supercurrent and the thermophase effect is observed. The effect of interdot hopping and the position of quantum dot energy level on the thermophase Seebeck coefficient is investigated
