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- ArticleTang P, Iguchi R, Uchida KI, Bauer GEW.Phys Rev Lett. 2022 Jan 28;128(4):047601.We formulate a scattering theory of polarization and heat transport through a ballistic ferroelectric point contact. We predict a polarization current under either an electric field or a temperature difference that depends strongly on the direction of the ferroelectric order and can be detected by its magnetic stray field and associated thermovoltage and Peltier effect.