Band structure and electronic properties of the incommensurate misfit compound (LaS)(1.18)VS2

The electronic properties of the incommensurate misfit compound (LaS)(1.18) VS2 are investigated by different methods. Linear muffin-tin orbital atomic -sphere approximation bandstructure calculation shows that this material sh ould be a metal with a Fermi level located near a minimum of the density of states. Experimentally, the electrical resistivity is hopping-like while t he magnetic susceptibility is metallic-like with a strong enhancement. We s uggest that these paradoxical properties can be reconciled by taking into a ccount the effects of incommensurability and electronic correlations. A com parison with commensurate LiVS2 and with Ti or Cr incommensurate misfit der ivatives is discussed.