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Ultrafast terahertz...
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Chen, F.Stanford Linear Accelerator Center (SLAC),Stanford University
(author)
Ultrafast terahertz-field-driven ionic response in ferroelectric BaTiO3
- Article/chapterEnglish2016
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LIBRIS-ID:oai:lup.lub.lu.se:231087c2-6642-4737-8ff2-2370d85cfb43
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https://lup.lub.lu.se/record/231087c2-6642-4737-8ff2-2370d85cfb43URI
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https://doi.org/10.1103/PhysRevB.94.180104DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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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 perpendicular to the ferroelectric polarization drive large-amplitude displacements of the titanium atoms along the ferroelectric polarization axis, comparable to that of the built-in displacements associated with the intrinsic polarization and incoherent across unit cells. This effect is associated with a dynamic rotation of the ferroelectric polarization switching on and then off on picosecond time scales. These transient polarization modulations are followed by long-lived vibrational heating effects driven by resonant excitation of the ferroelectric soft mode, as reflected in changes in the c-axis tetragonality. The ultrafast structural characterization described here enables a direct comparison with first-principles-based molecular-dynamics simulations, with good agreement obtained.
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Zhu, Y.Argonne National Laboratory
(author)
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Liu, S.University of Pennsylvania,Carnegie Institution for Science
(author)
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Qi, Y.University of Pennsylvania
(author)
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Hwang, H. Y.Massachusetts Institute of Technology
(author)
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Brandt, N. C.Massachusetts Institute of Technology
(author)
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Lu, J.Massachusetts Institute of Technology
(author)
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Quirin, F.University of Duisburg-Essen
(author)
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Enquist, H.Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)fysi-hen
(author)
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Zalden, P.Stanford Linear Accelerator Center (SLAC)
(author)
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Hu, T.Stanford University
(author)
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Goodfellow, J.Stanford University
(author)
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Sher, M. J.Stanford Linear Accelerator Center (SLAC),Stanford University
(author)
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Hoffmann, M. C.Stanford Linear Accelerator Center (SLAC)
(author)
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Zhu, D.Stanford Linear Accelerator Center (SLAC)
(author)
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Lemke, H.Stanford Linear Accelerator Center (SLAC)
(author)
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Glownia, J.Stanford Linear Accelerator Center (SLAC)
(author)
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Chollet, M.Stanford Linear Accelerator Center (SLAC)
(author)
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Damodaran, A. R.University of California, Berkeley
(author)
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Park, J.University of Wisconsin
(author)
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Cai, Z.Argonne National Laboratory
(author)
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Jung, I. W.Argonne National Laboratory
(author)
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Highland, M. J.Argonne National Laboratory
(author)
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Walko, D. A.Argonne National Laboratory
(author)
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Freeland, J. W.Argonne National Laboratory
(author)
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Evans, P. G.University of Wisconsin
(author)
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Vailionis, A.Stanford University
(author)
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Larsson, JörgenLund University,Lunds universitet,Atomfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Atomic Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)fysi-jla
(author)
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Nelson, K. A.Massachusetts Institute of Technology
(author)
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Rappe, A. M.University of Pennsylvania
(author)
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Sokolowski-Tinten, K.University of Duisburg-Essen
(author)
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Martin, L. W.University of California, Berkeley,Lawrence Berkeley National Laboratory
(author)
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Wen, H.Argonne National Laboratory
(author)
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Lindenberg, A. M.Stanford University,Stanford Linear Accelerator Center (SLAC)
(author)
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Stanford Linear Accelerator Center (SLAC)Stanford University
(creator_code:org_t)
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In:Physical Review B94:181098-0121
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- By the author/editor
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Chen, F.
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Zhu, Y.
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Liu, S.
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Qi, Y.
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Hwang, H. Y.
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Brandt, N. C.
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show more...
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Lu, J.
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Quirin, F.
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Enquist, H.
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Zalden, P.
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Hu, T.
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Goodfellow, J.
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Sher, M. J.
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Hoffmann, M. C.
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Zhu, D.
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Lemke, H.
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Glownia, J.
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Chollet, M.
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Damodaran, A. R.
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Park, J.
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Cai, Z.
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Jung, I. W.
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Highland, M. J.
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Walko, D. A.
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Freeland, J. W.
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Evans, P. G.
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Vailionis, A.
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Larsson, Jörgen
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Nelson, K. A.
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Rappe, A. M.
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Sokolowski-Tinte ...
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Martin, L. W.
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Wen, H.
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Lindenberg, A. M ...
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