Anisotropy-driven thermal conductivity switching and thermal hysteresis in a ferroelectric
arXiv:1910.08584 · doi:10.1063/1.5127825
Abstract
We present a theoretical proposal for the design of a thermal switch based on the anisotropy of the thermal conductivity of PbTiO3 and of the possibility to rotate the ferroelectric polarization with an external electric field. Our calculations are based on an iterative solution of the phonon Boltzmann Transport Equation and rely on interatomic force constants computed within an efficient second-principles density functional theory scheme. We also characterize the hysteresis cycle of the thermal conductivity in presence of an applied electric field and show that the response time would be limited by speed of the ferroelectric switch itself and thus can operate in the high-frequency regime.
arXiv commentsubmitted to Appl. Phys. Lett
References in corpus (9)
- Distribution of phonon lifetime in Brillouin zone
- Phononics: Manipulating heat flow with electronic analogs and beyond
- Second-principles method including electron and lattice degrees of freedom
- Effect of Grain Boundaries on Thermal Transport in Graphene
- First-principles model potentials for lattice-dynamical studies: general methodology and example of application to ferroic perovskite oxides
- First principles Kinetic-Collective thermal conductivity of semiconductors
- A phononic switch based on ferroelectric domain walls
- Electric control of the heat flux through electrophononic effects
- Thermal conductivity for III-V and II-VI semiconductor wurtzite and zinc-blende polytypes: the role of anharmonicity and phase space