Simulating Terahertz Field-Induced Ferroelectricity in Quantum Paraelectric SrTiO3

Thumbnail
Ver/
Fecha
2022-10
Autor
Shin, Dongbin
Latini, Simone
Schäfer, Christian
Sato, Shunsuke A.
Baldini, Edoardo
De Giovannini, Umberto
Hübener, Hannes
Rubio Secades, Angel
Metadatos
Mostrar el registro completo del ítem
Physical Review Letters 129(16) : (2022) // Article ID 167401
URI
http://hdl.handle.net/10810/58624
Resumen
Recent experiments have demonstrated that light can induce a transition from the quantum paraelectric to the ferroelectric phase of SrTiO3. Here, we investigate this terahertz field-induced ferroelectric phase transition by solving the time-dependent lattice Schrodinger equation based on first-principles calculations. We find that ferroelectricity originates from a light-induced mixing between ground and first excited lattice states in the quantum paraelectric phase. In agreement with the experimental findings, our study shows that the nonoscillatory second harmonic generation signal can be evidence of ferroelectricity in SrTiO3. We reveal the microscopic details of this exotic phase transition and highlight that this phenomenon is a unique behavior of the quantum paraelectric phase.
Colecciones
  Estadisticas RECOLECTA - LA Referencia

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
Excepto si se señala otra cosa, la licencia del ítem se describe como Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Open access publication funded by the Max Planck Society.