Nonlocal Drag Thermoelectricity Generated by Ferroelectric Heterostructures
Ping Tang, Ken-ichi Uchida, and Gerrit E. W. Bauer
TL;DR
This paper predicts a novel nonlocal thermoelectric effect in ferroelectric heterostructures, where electric currents induce heat currents via long-range interactions, controllable by gates and detectable thermographically.
Contribution
It introduces the concept of nonlocal ferron drag in ferroelectric/metal heterostructures, highlighting a new mechanism for thermoelectric energy transfer.
Findings
Large nonlocal Peltier and Seebeck effects predicted
Control of effects via electric gates demonstrated
Potential for applications in thermoelectric devices
Abstract
The \textquotedblleft ferron\textquotedblright\ excitations of the electric-dipolar order carry energy as well as electric dipoles. Here we predict a nonlocal ferron drag effect in a ferroelectric on top of a metallic film: An electric current in the conductor generates a heat current in the ferroelectric by long-range charge-dipole interactions. The non-local Peltier and its reciprocal Seebeck effect can be controlled by electric gates and detected thermographically. We predict large effects for van der Waals ferroelectric films on graphene.
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Taxonomy
TopicsAdvanced Thermodynamics and Statistical Mechanics · Quantum and electron transport phenomena · Theoretical and Computational Physics