论文标题
拓扑安德里弗干涉仪中的非局部热电学
Nonlocal thermoelectricity in a topological Andreev interferometer
论文作者
论文摘要
我们讨论了与正常金属探针接触的拓扑约瑟夫森连接中相关的非局部热电效应。我们表明，由于拓扑边缘状态的螺旋性质，非局部热电学是由纯粹的Andreev干涉机制产生的。即使无需应用外部磁场，也可以通过在两个超导体之间应用无耗散电流来调节这种响应。我们详细讨论了这种效果的起源，并提供了对非本地Seebeck系数的现实估计，该系数的结果为$μv/k $。
We discuss the phase dependent nonlocal thermoelectric effect in a topological Josephson junction in contact with a normal-metal probe. We show that, due to the helical nature of topological edge states, nonlocal thermoelectricity is generated by a purely Andreev interferometric mechanism. This response can be tuned by imposing a Josephson phase difference, through the application of a dissipationless current between the two superconductors, even without the need of applying an external magnetic field. We discuss in detail the origin of this effect and we provide also a realistic estimation of the nonlocal Seebeck coefficient that results of the order of few $μV/K$.
