EPJ Web of Conferences (Mar 2013)

Ultrafast Mid-infrared Spectroscopy of the Charge- and Spin-Ordered Nickelate La1.75Sr0.25NiO4

  • Shen Z.-X.,
  • Schoenlein R. W.,
  • Martin M. C.,
  • Bechtel H. A.,
  • Hussain Z.,
  • Sasagawa T.,
  • Zhu Y.,
  • Chuang Y.-D.,
  • Lee W.-S.,
  • Huber B.,
  • Coslovich G.,
  • Kaindl R. A.

DOI
https://doi.org/10.1051/epjconf/20134103016
Journal volume & issue
Vol. 41
p. 03016

Abstract

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We present the first ultrafast mid-infrared study of charge and spin-ordered nickelates. A sub-picosecond modulation of the optical reflectivity is observed, indicating the filling and subsequent re-establishment of the pseudogap in the time-domain.