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  Dynamical amplification of electric polarization through nonlinear phononics in 2D SnTe

Shin, D., Sato, S., Hübener, H., de Giovannini, U., Park, N., & Rubio, A. (2020). Dynamical amplification of electric polarization through nonlinear phononics in 2D SnTe. npj Computational Materials, 6(1): 182. doi:10.1038/s41524-020-00449-6.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0007-4FD1-5 Version Permalink: https://hdl.handle.net/21.11116/0000-0007-7B63-0
Genre: Journal Article

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https://arxiv.org/abs/2010.13646 (Preprint)
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 Creators:
Shin, D.1, 2, Author           
Sato, S.1, 2, 3, Author           
Hübener, H.1, 2, Author           
de Giovannini, U.1, 2, 4, Author           
Park, N.5, Author
Rubio, A.1, 2, 4, 6, Author           
Affiliations:
1Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266715              
2Center for Free-Electron Laser Science, ou_persistent22              
3Center for Computational Sciences, University of Tsukuba, ou_persistent22              
4Nano-Bio Spectroscopy Group, Departamento de Fisica de Materiales, Universidad del Pais Vasco, ou_persistent22              
5Department of Physics, Ulsan National Institute of Science and Technology, UNIST-gil 50, ou_persistent22              
6Center for Computational Quantum Physics (CCQ), The Flatiron Institute, ou_persistent22              

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 Abstract: Ultrafast optical control of ferroelectricity using intense terahertz fields has attracted significant interest. Here we show that the nonlinear interactions between two optical phonons in SnTe, a two-dimensional in-plane ferroelectric material, enables a dynamical amplification of the electric polarization within subpicoseconds time domain. Our first-principles time-dependent simulations show that the infrared-active out-of-plane phonon mode, pumped to nonlinear regimes, spontaneously generates in-plane motions, leading to rectified oscillations in the in-plane electric polarization. We suggest that this dynamical control of ferroelectric material, by nonlinear phonon excitation, can be utilized to achieve ultrafast control of the photovoltaic or other nonlinear optical responses.

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Language(s): eng - English
 Dates: 2020-05-122020-10-282020-11-30
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: arXiv: 2010.13646
DOI: 10.1038/s41524-020-00449-6
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Title: npj Computational Materials
  Abbreviation : npj Comput. Mater.
Source Genre: Journal
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Publ. Info: London : Springer Nature
Pages: - Volume / Issue: 6 (1) Sequence Number: 182 Start / End Page: - Identifier: ISSN: 2057-3960
CoNE: https://pure.mpg.de/cone/journals/resource/2057-3960