Regensburg 2019 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 65: Poster Wednesday: Surface Structure, Epitaxy and Growth
O 65.14: Poster
Mittwoch, 3. April 2019, 17:45–20:00, Poster B1
Influence of the sample preparation on hydrogen-induced surface reconstruction on Pd(110) — •Robert Schindhelm1, Markus Leisegang1, Jens Kügel1, and Matthias Bode1,2 — 1Physikalisches Institut, Experimentelle Physik II, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany — 2Wilhelm Conrad Röntgen Center of Complex Material Systems (RCCM), Universität Würzburg, Am Hubland, 97074 Würzburg
The three main impurities to be considered when cleaning Pd(110) surfaces are hydrogen (H), carbon (C), and oxygen (O).
Especially, H-induced vacancy rows reconstructions were investigated by STM [1,2].
We have systematically investigated the influence of some preparation parameters,
i.e., the annealing temperature and the hydrogen pressure,
on the temporal evolution of H-induced surface reconstructions by means of room-temperature STM.
Whereas most results are in agreement with literature, our quantitative analysis regarding the relation
between vacancy rows and adatom rows reveals some significant differences.
We will discuss the suitability of these Pd(110) surfaces for studies of the direct [3] and remote [4] charge carrier-induced
vibrationally excited motion of cis-2-Butene, a prominent example for molecular switches [3].
[1] E. Kampshoff et al. Surf. Sci. 360, 55 (1996).
[2] M. Kralj et al. Surf. Sci. 600, 4113 (2006).
[3] Kawai et al. Phys. Rev. Lett. 95, 246102 (2005).
[4] Leisegang et al. Nano Lett. 18, 2165 (2018).