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Low-temperature conductance measurements on single molecules

Reichert, Joachim 1; Weber, Heiko B. 1; Mayor, Marcel 1; Loehneysen, Hilbert von 2
1 Forschungszentrum Karlsruhe (FZKA)
2 Physikalisches Institut (PHI), Karlsruher Institut für Technologie (KIT)


We present an experimental protocol which allows to perform conductance spectroscopy on single organic molecules at low temperatures (T » 30K) [1]. The conductance data obtained at low-T with a conjugated sample molecule show a highly improved data quality with a higher stability, narrower linewidth and substantially reduced noise compared to room-temperature (RT) data [2]. For the RT measurements a rather broad range of sample-to-sample fluctuations was attributed to different microscopic contact realisations. The smaller number of variations in the recorded low-T spectra might indicate that here energetically favourable configurations occure more frequently. Thus the comparability of experimental data with other experiments as well as with theoretical simulations is considerably improved.

DOI: 10.1063/1.1574844
Zitationen: 118
Zitationen: 119
Zugehörige Institution(en) am KIT Institut für Festkörperphysik (IFP)
Institut für Nanotechnologie (INT)
Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2003
Sprache Englisch
Identifikator ISSN: 0003-6951, 1077-3118
KITopen-ID: 9862003
HGF-Programm 42.01.01 (Vor POF, LK 01)
Erschienen in Applied physics letters
Verlag American Institute of Physics (AIP)
Band 82
Heft 23
Seiten 4137-4139
Externe Relationen Abstract/Volltext
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