In the last two decades non-equilibrium spectroscopies have evolved from avant-garde
studies to crucial tools for expanding our understanding of the physics of strongly correlated …

The response of the worldwide scientific community to the discovery in 2008 of
superconductivity at T c= 26 K in the Fe-based compound LaFeAsO1− x F x has been very …

The advent of intense ultrashort optical pulses spanning a frequency range from terahertz to
the visible has opened a new era in the experimental investigation and manipulation of …

Using time-domain terahertz spectroscopy we performed direct studies of the photoinduced
suppres<? format?> sion and recovery of the superconducting gap in a conventional BCS …

We report the time-resolved excited state ultrafast dynamics of single unit cell (1 UC) thick
FeSe films on SrTiO 3 (STO), with FeTe cap** layers. By measuring the photoexcited …

Ultrafast optical pump-probe spectroscopy is used to track carrier dynamics in the large-
magnetoresistance material WTe 2. Our experiments reveal a fast relaxation process …

Fe-based superconductors bridge a gap between MgB 2 and the cuprate high temperature
superconductors as they exhibit multiband character and transition temperatures up to …

Using femtosecond laser pulses, coherent GHz acoustic phonons are efficiently
photogenerated and photodetected in BiFeO 3 (BFO) multiferroic single crystal. Due to the …

Many of the iron pnictides have strongly anisotropic normal-state characteristics, important
for the exotic magnetic and superconducting behaviour these materials exhibit. Yet, the …

The transient response of Ba (Fe 1− x Co x) 2 As 2, x= 0.08 was studied by pump-probe
optical reflectivity. After ultrafast photoexcitation, hot electrons were found to relax with two …