Berlin 2015 – scientific programme
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O: Fachverband Oberflächenphysik
O 66: Electronic Structure of Surfaces
O 66.2: Poster
Wednesday, March 18, 2015, 18:15–21:00, Poster A
STM study on the electronic properties of the Vanadium (100) (1x5) surface reconstruction — •Andreas Topp1, Berthold Jäck1, Matthias Eltschka1, Markus Etzkorn1, Christian Ast1, and Klaus Kern1,2 — 1Max-Planck Institute for Solid State Research, D-70569 Stuttgart — 2Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne
Vanadium has recieved comparibly little attention in surface science, despite the interesting superconducting properties, since its superconducting phase offers a high critical temperature with moderate critical fields [1]. The (1×5) reconstuction of the Vanadium (100) surface has been studied by means of AES, ARPES, STM topography, LEED and DFT [2, 3]. The influence of oxygen in forming this reconstuction has been of special interest. Here, we use scanning tunneling microscopy to investigate the local electronic structure of the (1×5) reconstruction with atomic scale precision. By reporting on conductance measurements between 0 − 1 V, we can show that the local density of states strongly varies within the reconstruction.
[1] S.Sekula and R.Kernohan, Phys. Rev. B 5, 904 (1972)
[2] R.Koller et al., Surf. Sci. 480, 11 (2001)
[3] M.Kralj et al., Surf. Sci. 526, 166 (2013)