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Our materials fabrication and characterization work centers on thin film growth by pulsed laser deposition (PLD) and pulsed-dc magnetron sputtering. Main materials of current interest include several vanadium oxide phases, particularly those which exhibit phase transitions, as well as other oxides. Attention is directed also to variation of properties caused by structural differences, including those in the nanoscale, and by stress. Film characterization extends to determination of crystal structure by x-ray diffraction as well as study of electronic, optical, and mechanical properties.
The group conducts research in photoexited state dynamics, metal-insulator phase transition, nonlinear plasmonics and lattice relaxation of complex materials. Current study focuses on photoinduced processes in correlated oxides and hybrid plasmonic structures. Methods of ultrafast nonlinear spectroscopy are applied to separate the charge and lattice dynamics upon photoexitation and to reconstruct the evolution of electronic and structural material properties. The group is equipped by femtosecond and picosecond lasers, spectrometers and state-of-the-art optical systems developed in our lab, including time- and angle-resolved hemispherical elastic light scattering system for femtosecond surface spectroscopy.