Publications

Room-temperature voltage tunable phonon thermal conductivity via reconfigurable interfaces in ferroelectric thin films

Ihlefeld, Jon I.; Foley, Brian M.; Scrymgeour, David S.; Michael, Joseph R.; McKenzie, Bonnie B.; Medlin, Douglas L.; Wallace, Margeaux; Trolier-Mckinstry, Susan; Hopkins, Patrick E.

Dynamic control of thermal transport in solid-state systems is a transformative capability with the promise to propel technologies including phononic logic, thermal management, and energy harvesting. A solid-state solution to rapidly manipulate phonons has escaped the scientific community. We demonstrate active and reversible tuning of thermal conductivity by manipulating the nanoscale ferroelastic domain structure of a Pb(Zr0.3Ti0.7)O3 film with applied electric fields. With subsecond response times, the room-temperature thermal conductivity was modulated by 11%.