Reply to “Comment on ‘Ultrafast terahertz-field-driven ionic response in ferroelectric $BaTiO_{3}$' ”

Chen, F.; Zhu, Y.; Liu, S.; Qi, Y.; Hwang, H. Y.; Brandt, N. C.; Lu, J.; Quirin, F.; Enquist, H.; Zalden, P.; Hu, T.; Goodfellow, J.; Sher, M.-J.; Hoffmann, M. C.; Zhu, D.; Lemke, H.; Glownia, J.; Chollet, M.; Damodaran, A. R.; Park, J.; Cai, Z.; Jung, I. W.; Highland, M. J.; Walko, D. A.; Freeland, J. W.; Evans, P. G.; Vailionis, A.; Larsson, J.; Nelson, K. A.; Rappe, A. M.; Sokolowski-Tinten, K.; Martin, L. W.; Wen, H.; Lindenberg, A. M.

2018

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Abstract

In this reply to S. Durbin’s comment on our original paper “Ultrafast terahertz-field-driven ionic response in ferroelectric $BaTiO_{3}$,” we concur that his final equations 8 and 9 more accurately describe the change in diffracted intensity as a function of Ti displacement. We also provide an alternative derivation based on an ensemble average over unit cells. The conclusions of the paper are unaffected by this correction.