Fig. 3: Evidence for the additional charge modulation inside the CDW state.

a Central peaks of 51V-NMR spectra at various temperatures below T = 60 K. b Temperature-dependent full width of half maximum (FWHM) of all Sb sites. The FWHM of both sites start to increase below T* ~ 40 K marked by the black arrow. The error bar is the s.d. in fitting spectra by the Lorentz function.