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

Shin, D.; Sato, S.; Hübener, H.; de Giovannini, U.; Park, N.; Rubio, A.

doi:10.1038/s41524-020-00449-6

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

MPG-Autoren

/persons/resource/persons252093

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;

/persons/resource/persons222317

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;

/persons/resource/persons221951

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;

/persons/resource/persons221949

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;

/persons/resource/persons22028

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;

Externe Ressourcen

https://arxiv.org/abs/2010.13646
(Preprint)

https://dx.doi.org/10.1038/s41524-020-00449-6
(Verlagsversion)

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Zitation

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.

Zitierlink: https://hdl.handle.net/21.11116/0000-0007-4FD1-5

Zusammenfassung

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.