Ultrafast terahertz-field-driven ionic response in ferroelectric BaTiO3

  title={Ultrafast terahertz-field-driven ionic response in ferroelectric BaTiO3},
  author={Fei Chen and Yihan Zhu and Shuaimin Liu and Yanpeng Qi and Harold Y Hwang and Nathaniel Curran Brandt and Jicai Lu and Florian Quirin and Henrik Enquist and Peter Zalden and Chaoqiang Geng and John S. Goodfellow and M.-J. Sher and M C Hoffmann and Di Zhu and H.Lemke and J. Glownia and Matthieu Chollet and Anoop R Damodaran and Jong Sup Park and Zi Hong Cai and Il Woong Jung and M.J.Highland and Donald Alan Walko and John W Freeland and Paul G. Evans and Artūras Vailionis and Jan-{\AA}ke Larsson and Keith A Nelson and Andrew M. Rappe and Klaus Sokolowski-Tinten and Lane W Martin and Harold H. Wen and Aaron M Lindenberg},
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 subpicosecond duration, single-cycle terahertz pulses as an ultrafast electric field bias to prototypical BaTiO3 ferroelectric thin films with the atomic-scale response probed by femtosecond x-ray-scattering techniques. We show that electric fields applied… CONTINUE READING