"Forbidden" phonon: dynamical signature of bond symmetry breaking in the iron chalcogenides

David M. Fobes, Igor A. Zaliznyak, John M. Tranquada +8

Investigation of the inelastic neutron scattering spectra in Fe${}_{1+y}$Te${}_{1-x}$Se${}_x$ near a signature wave vector $\mathbf{Q}=(1,0,0)$ for the bond-order wave (BOW) formatio…