"Reply to "Comment on 'Ultrafast terahertz-field-driven ionic response in ferroelectric BaTiO3'""

F. Chen: Y. Zhu, S. Liu, Y. Qi, H.Y. Hwang, N.C. Brandt, J. Lu, F. Quirin, H. Enquist, P. Zalden, T. Hu, J. Goodfellow, M.-J. Sher, M.C. Hoffmann, D. Zhu, H. Lemke, J. Glownia, M. Chollet, A. R. Damodaran, J. Park, Z. Cai, I.W. Jung, M.J. Highland, D.A. Walko, J. W. Freeland, P.G. Evans, A. Vailionis, J. Larsson, K.A. Nelson, A.M. Rappe, K. Sokolowski-Tinten, L. W. Martin, H. Wen, and A.M. Lindenberg; Physical Review B, 05/15/18.

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

Abstract:

In this reply to S. Durbin’s comment on our original paper “Ultrafast terahertz-field-driven ionic response in ferroelectric BaTiO3,” 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.