Mesoscale2026-08-161 minarXiv:2608.15596expressHeat Without Wires: Metal and FerroelectricIf you run a current through two soldered conductors, the junction heats up or cools down: that's the Peltier effect, which powers car refrigerators.Takuma Itoh·Takamasa Hirai·Ping Tang·Hossein Sepehri-Amin·Ryo Iguchi·Yusuke Kozuka·Takao Shimizu·Soshi Akita·Shunsuke Mori·Gerrit E. W. Bauer·Ken-ichi UchidaLudwig BoltzmannRudolf MossbauerAlbert Einsteinthermal conductivitysuperconductivityPhase transitionentropy👍👎☆SimplePopularAdvanced