Ultrafast x-ray diffraction probe of terahertz field-driven soft mode dynamics

M. Kozina; T. van Driel; M. Chollet; T. Sato; J. M. Glownia; S. Wandel; M. Radovic; U. Staub; M. C. Hoffmann

Ultrafast x-ray diffraction probe of terahertz field-driven soft mode dynamics

Materials Science 2017-03-30 v1

Authors: M. Kozina , T. van Driel , M. Chollet , T. Sato , J. M. Glownia , S. Wandel , M. Radovic , U. Staub , M. C. Hoffmann

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Abstract

We use ultrafast x-ray pulses to characterize the lattice response of SrTiO3 when driven by strong terahertz (THz) fields. We observe transient changes in the diffraction intensity with a delayed onset with respect to the driving field. Fourier analysis reveals two frequency components corresponding to the two lowest energy zone-center optical modes in SrTiO3. The lower frequency mode exhibits clear softening as the temperature is decreased while the higher frequency mode shows slight temperature dependence.

Keywords

terahertz radiation attosecond physics atomic spectroscopy

Cite

@article{arxiv.1703.09818,
  title  = {Ultrafast x-ray diffraction probe of terahertz field-driven soft mode dynamics},
  author = {M. Kozina and T. van Driel and M. Chollet and T. Sato and J. M. Glownia and S. Wandel and M. Radovic and U. Staub and M. C. Hoffmann},
  journal= {arXiv preprint arXiv:1703.09818},
  year   = {2017}
}

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15 pages, 5 figures

Ultrafast x-ray diffraction probe of terahertz field-driven soft mode dynamics

Abstract

Keywords

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