WORK FUNCTION AND ELECTRONIC STRUCTURE OF Co OVERLAYERS ON THE ION SPUTTERED BASAL FACE OF MoS_(2) SINGLE CRYSTAL

Work function and photoemission spectroscopy have been applied to the study of the interaction of Co overlayers with the ion sputtered basal face of MoS_(2)(0001).The experimental results show that upon Co deposition the work function of the MoS_(2)substrate drops rapidly and reaches a minimum value of-0.65eV forΔФ,and then increases to the metal Co work function at coverages greater than a monolayer.The Fermi level pinning at 2.2eV above the Mo 4dz2 peak has been found at a low submonolayer coverage.