Title :
Ultrafast dynamics of the mid-infrared pseudogap in stripe-phase La1.75Sr0.25NiO4
Author :
Coslovich, G. ; Huber, B. ; Lee, W.-S. ; Chuang, Y.-D. ; Zhu, Y. ; Sasagawa, T. ; Hussain, Z. ; Bechtel, H.A. ; Martin, M.C. ; Schoenlein, R.W. ; Shen, Z.-X. ; Kaindl, R.A.
Author_Institution :
Mater. Sci. Div., Lawrence Berkeley Nat. Lab., Berkeley, CA, USA
Abstract :
We present the first ultrafast mid-infrared study of charge and spin-ordered nickelates. A multi-component dynamics is observed, evidencing the femtosecond decay and formation of the low-energy pseudogap in the optical conductivity.
Keywords :
high-speed optical techniques; infrared spectra; lanthanum compounds; optical conductivity; strontium compounds; La1.75Sr0.25NiO4; charge ordered nickelates; femtosecond decay; low-energy pseudogap; multi-component dynamics; optical conductivity; spin ordered nickelates; stripe phase; ultrafast mid-infrared dynamics; Conductivity; Correlation; Probes; Reflectivity; Spectroscopy; Transient analysis; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4673-1839-6
