[17p-W9_326-1~16] 3.5 Ultrashort-pulse and high-intensity lasers

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[17p-W9_326-5] Optical control of crystal structure and superconductivity in iron-based superconductors via nonlinear phononics

〇Shu Kamiyama¹, Tatsuya Kaneko¹, Kazuhiko Kuroki¹, Masayuki Ochi¹ (1.Univ. of Osaka)

Keywords:

phonon,iron-based superconductor,optical control

Nonlinear phononics has been proposed as a method for controlling crystal structures by exploiting nonlinear lattice vibrations induced by resonant excitation of optical phonon modes. It is also known that the superconducting transition temperature of iron-based superconductors is strongly correlated with the local crystal structure. In this study, based on the concept of nonlinear phononics, we theoretically predict the possibility of light-induced crystal structure control and an enhancement of the superconducting transition temperature in iron-based superconductors.