Open AccessProbing strongly correlated electron dynamics on extreme timescales
Author(s) -
Simon Wall,
H. Ehrke,
Dario Polli,
Daniele Brida,
Y. Tokura,
Hiroshi Okamoto,
Giulio Cerullo,
Andrea Cavalleri
Publication year - 2009
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/148/1/012018
Subject(s) - manganite , mott insulator , quantum tunnelling , condensed matter physics , excitation , terahertz radiation , electron , physics , coupling (piping) , phase transition , laser , strongly correlated material , materials science , optics , ferromagnetism , quantum mechanics , metallurgy
We use sub-10 fs laser pulses in the visible and near IR region of the spectrum in order to probe the dynamics of photo-induced phase transitions on their characteristic timescales. We present results from two different cases: the 1D organic Mott insulator ET-F(2)TCNQ and the more complex, colossal magneto-resistive manganite, Pr(0.7)Ca(0.3)MnO(3). For the former, we find that the melting of the Mott state takes 20 fs, a timescale which is dictated by the electron tunnelling time, h/t. In comparison, the dynamics of the manganite show coupling to a 14 THz structural mode and a high frequency 30 THz mode, which we assign a