Dresden 2017 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 40: Focus Session: Charge Transport at Surfaces and Nanostructures with Multi-probe Techniques II
O 40.1: Hauptvortrag
Dienstag, 21. März 2017, 14:00–14:30, WIL C307
Performances of the new low temperature ultrahigh vacuum 4 scanning tunneling microscopes — •christian Joachim1,2, Delphine Sordes1, Corentin Durand1, We-Hyo Soe1, and Marek Kolmer3 — 1CEMES-CNRS, 29 rue J. Marvig, 31055 Toulouse Cedex, France — 2MANA-NIMS, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan — 3NANOSAM, Jagiellonian University, Lojasiewicza 11, 30-348 Krakow, Poland
The performances of our new ScientaOmicron LT-UHV 4-STM are presented by a series of single tip experiments on the Au(111) surface [1]. Each of the 4 STM have performances equivalent to a single tip state-of-art LT-UHV-STM. We have also started to explore passivated Si(100)H surfaces with this instrument with 1 cm lateral size surfaces prepared from a 200 mm wafer [2] essential for the fabrication of atomic scale circuits [3]. Atomic resolution imaging confirms the position of the surface dimers relative to the surface atomic structure [4]. A gentle mechanical jump to contact was observed on a single H atom with very low G/Go contact conductance. Our LT-UHV 4-STM was transformed for the first international molecule car race in Toulouse, spring 2017 [5]. This competition will be shortly described with registered teams from Germany, France, Japan, Switzerland, Austria and US. A poster per team is presented in the poster session. [1] J. Yang et al. Eur. Phys. J. AP, 73, 10702 (2016) [2] M. Kolmer et al. Appl. Surf. Sci., 288, 83 (2014) [3] M. Kolmer et al., Nanoscale, 7, 12325 (2015). [4] T. L. Yap et al. Surf. Sci., 632, L13 (2015) [5] F. Eisenhut et al., Eur. Phys. J. AP, 76, 10001 (2016).