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Journal Article

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

MPS-Authors
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Shin,  D.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science;

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Sato,  S.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science;
Center for Computational Sciences, University of Tsukuba;

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Hübener,  H.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science;

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de Giovannini,  U.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science;
Nano-Bio Spectroscopy Group, Departamento de Fisica de Materiales, Universidad del Pais Vasco;

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Rubio,  A.
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science;
Nano-Bio Spectroscopy Group, Departamento de Fisica de Materiales, Universidad del Pais Vasco;
Center for Computational Quantum Physics (CCQ), The Flatiron Institute;

External Ressource
Fulltext (public)

s41524-020-00449-6.pdf
(Publisher version), 2MB

Supplementary Material (public)

41524_2020_449_MOESM1_ESM.pdf
(Supplementary material), 534KB

Citation

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.


Cite as: http://hdl.handle.net/21.11116/0000-0007-4FD1-5
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.