Ultrafast terahertz-field-driven ionic response in ferroelectric BaTiO_3

The dynamical processes associated with electric field manipulation of the polarization in a ferroelectric remain largely unknown but fundamentally determine the speed and functionality of ferroelectric materials and devices. Here we apply sub-picosecond duration, single-cycle terahertz pulses as an ultrafast electric field bias to prototypical BaTiO_3 ferroelectric thin films with... Show more