Recent progress on a search for sub-GeV dark matter in the complete LUX exposure

Recent studies suggest that by using the dark matter - nucleus inelastic scattering channel, dual-phase xenon time projection chambers can be sensitive to sub-GeV dark matter. Sub-GeV dark matter is difficult to probe, because of the small energy transfer in dark matter - nucleus elastic scattering and the finite energy threshold of the detector. Bremsstrahlung photon emissions and electron emissions from the Migdal effect, two effects in the inelastic scattering channel, are used to circumvent this difficulty. This analysis utilizes both the scintillation (S1) and ionization (S2) signals in the complete LUX exposure data. Recent progress on this analysis is presented, building on the search result in the LUX 2013 data.