Dresden 2014 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 101: Transport - Poster Session
TT 101.11: Poster
Thursday, April 3, 2014, 15:00–19:00, P2
Electronic Properties of Spirobifluorene Molecules — •Amin Karimi1, Michal Valasek2, Fabian Pauly1, Maya Lukas2, Marcel Mayor2, and Elke Scheer1 — 1University of Konstanz — 2Karlsruhe Institute of Technology
The knowledge about the fundamental correlations between a molecule’s functional chemical groups, its contacts, and surroundings and the resulting electronic properties is imperative for the design of future molecular electronic building blocks [1,2]. The electronic properties of multipodal molecules have been studied in recent years mainly by inserting them into mechanically controlled break junctions (MCBJ) [3] or by scanning tunneling microscopy (STM) [4]. We present charge transport measurements through single spirobifluorene tripodal molecules, performed with the help of the low-temperature MCBJ technique. Inelastic electron tunneling spectra are measured to study the influence of vibronic coupling on the conductance of molecular junctions and to obtain in this way knowledge about the contact geometry and electrode-molecule coupling.
[1] J. C. Cuevas and E. Scheer, Molecular Electronics: An Introduction to Theory and Experiment, World Scientific, Singapore (2010).
[2] S. Aradhya and L. Venkataraman, Nature Nanotech. 8, 399 (2013).
[3] Y. Ie, T. Hirose, H. Nakamura, M. Kiguchi, N.Takagi, M. Kawai, and Y. Aso, J. Am. Chem. Soc. 133, 3014 (2011).
[4] M. Lukas, K. Dössel, A. Schramm, O. Fuhr, C. Stroh, M. Mayor, K. Fink, and H. v. Löhneysen, ACS Nano 7, 6170 (2013).