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  Ultrafast reversal of the ferroelectric polarization

Mankowsky, R., von Hoegen, A., Först, M., & Cavalleri, A. (2017). Ultrafast reversal of the ferroelectric polarization. Physical Review Letters, 118: 197601. doi:10.1103/PhysRevLett.118.197601.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002C-5D6C-9 Version Permalink: https://hdl.handle.net/21.11116/0000-0004-BF29-8
Genre: Journal Article

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PhysRevLett.118.197601.pdf (Publisher version), 662KB
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https://arxiv.org/abs/1701.06312 (Preprint)
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 Creators:
Mankowsky, R.1, Author           
von Hoegen, A.1, Author           
Först, M.1, Author           
Cavalleri, A.1, 2, Author           
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
2Department of Physics, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, UK, ou_persistent22              

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 Abstract: The ability to manipulate ferroelectrics at ultrafast speeds has long been an elusive target for materials research. By using short optical pulses to coherently displace all atoms along the ferroelectric mode, witching times could be shortened by two orders of magnitude compared to what is possible with pulsed electric fields. Here, we report on the demonstration of ultrafast optical reversal of the ferroelectric polarization in LiNbO3. Rather than driving the ferroelectric mode directly, we couple to it indirectly by exciting an auxiliary high-frequency vibration. The ferroelectric polarization is then reversed due to the anharmonic coupling between the two modes, as revealed by time-resolved, phase-sensitive second-harmonic generation. Reversal can be induced in both directions, a key pre-requisite for practical applications.

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Language(s): eng - English
 Dates: 2017-01-212017-05-102017-06-17
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: arXiv: 1701.06312
DOI: 10.1103/PhysRevLett.118.197601
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Project name : We thank Michael Fechner, Roberto Merlin, and Alaska Subedi for valuable discussions. The research leading to these results received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007–2013)/ERC Grant Agreement No. 319286 (QMAC). This work has been supported by the excellence cluster “The Hamburg Centre for Ultrafast Imaging—Structure, Dynamics and Control of Matter at the Atomic Scale” of the Deutsche Forschungsgemeinschaft.
Grant ID : 319286
Funding program : Funding Programme 7 (FP7)
Funding organization : European Commission (EC)

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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 118 Sequence Number: 197601 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1