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arXiv · 2007.16183

Nonlocal thermoelectricity in a topological Andreev interferometer

Gianmichele Blasi·Fabio Taddei·Liliana Arrachea·Matteo Carrega·Alessandro Braggio
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Abstract

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 $μV/K$.

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Gianmichele Blasi, Fabio Taddei, Liliana Arrachea, Matteo Carrega, Alessandro Braggio. 2020-07-31. Nonlocal thermoelectricity in a topological Andreev interferometer. https://doi.org/10.1103/physrevb.102.241302

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