Applied Physics A

, 96:83 | Cite as

Ultrafast structural dynamics of perovskite superlattices

  • M. Woerner
  • C. v. Korff Schmising
  • M. Bargheer
  • N. Zhavoronkov
  • I. Vrejoiu
  • D. Hesse
  • M. Alexe
  • T. Elsaesser
Open Access
Article

Abstract

Femtosecond x-ray diffraction provides direct insight into the ultrafast reversible lattice dynamics of materials with a perovskite structure. Superlattice (SL) structures consisting of a sequence of nanometer-thick layer pairs allow for optically inducing a tailored stress profile that drives the lattice motions and for limiting the influence of strain propagation on the observed dynamics. We demonstrate this concept in a series of diffraction experiments with femtosecond time resolution, giving detailed information on the ultrafast lattice dynamics of ferroelectric and ferromagnetic superlattices. Anharmonically coupled lattice motions in a SrRuO3/PbZr0.2Ti0.8O3 (SRO/PZT) SL lead to a switch-off of the electric polarizations on a time scale of the order of 1 ps. Ultrafast magnetostriction of photoexcited SRO layers is demonstrated in a SRO/SrTiO3 (STO) SL.

PACS

75.80.+q 61.05.C- 78.47.-p 

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • M. Woerner
    • 1
  • C. v. Korff Schmising
    • 1
  • M. Bargheer
    • 2
  • N. Zhavoronkov
    • 1
  • I. Vrejoiu
    • 3
  • D. Hesse
    • 3
  • M. Alexe
    • 3
  • T. Elsaesser
    • 1
  1. 1.Max-Born-Institut für Nichtlineare Optik und KurzzeitspektroskopieBerlinGermany
  2. 2.Institut für Physik und AstronomieUniversität PotsdamPotsdamGermany
  3. 3.Max-Planck-Institut für MikrostrukturphysikHalleGermany

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