Unoccupied surface state on the (√3 × √3) R30° of 6H-SiC(0001)J.-M. Themlin, I. Forbeaux, V. Langlais, H. Belkhir and J.-M. DebeverEurophys. Lett., 39 1 (1997) 61-66DOI: https://doi.org/10.1209/epl/i1997-00314-9
