Author:
Koç Azize,Gonzalez-Vallejo Isabel,Runge Matthias,Ghalgaoui Ahmed,Reimann Klaus,Kremeyer Laurenz,Thiemann Fabian,Hoegen Michael Horn-von,Sokolowski-Tinten Klaus,Woerner Michael,Elsaesser Thomas
Abstract
We present femtosecond x-ray diffraction experiments performed on single crystal bismuth excited by 5 µm laser pulses, and nonlinear THz experiments. Our results point to a new excitation quantum pathway at longer excitation wavelengths allowing for coherent phonon excitation at the X point in the Brillouin zone.