  We investigate the nature of the metallic metastable state in 1T-TaS2. Using
microARPES, we measure the spatially-dependent modifications of the electronic
structure of the sample following a short current pulse. We observe that, in
some regions of the sample, a Fermi surface emerges, while other regions remain
gapped. A detailed study of the band structure in these different regions
suggests that the metallic parts are in a state similar to the nearly
commensurate charge density wave (NC-CDW) state, where the gaps are suppressed
and a band crosses the Fermi level. Furthermore, we find that the metallic and
insulating regions of the sample exhibit different dispersions normal to the
planes. This observation is consistent with a scenario in which the current
pulse breaks the star-of-David dimers present in the commensurate charge
density wave (C-CDW) state.
