Terahertz light driven coherent excitation of a zone-folded Raman-active phonon mode in the Spin-Ladder System $\hat{I}{\pm }^{\prime }$-NaV${}_2$O${}_5$

Flavio Giorgianni, Martina Romani, Pascal Puphal +5

We investigate the out-of-equilibrium lattice dynamics in the spin-ladder system $\hat{I}{\pm }^{\prime }$-NaV${}_2$O${}_5$ using intense terahertz (THz) pump and near-infrared (NIR) probe spectroscopy. W…