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

Giacomo Coslovich,B. Huber,W. S. Lee,Yi-De Chuang,Yiwen Zhu,T. Sasagawa,Z. Hussain,Hans A. Bechtel,M. C. Martin,Robert W. Schoenlein,Z.-X. Shen,Robert A. Kaindl

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

2013

Giacomo Coslovich
B. Huber
W. S. Lee
Yi-De Chuang
Yiwen Zhu
T. Sasagawa
Z. Hussain
Hans A. Bechtel
M. C. Martin
Robert W. Schoenlein
Z.-X. Shen
Robert A. Kaindl

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.

Keywords:

Ultrashort pulse
Condensed matter physics
Reflectivity
Spin-½
Engineering physics
Modulation
Physics
Mid infrared spectroscopy
Pseudogap

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