Quantum interference-induced conductance variation in mechanosensitive single-molecule junction

C. Hsu, D. Stefani, Kevin J. Weiland, Maxim Skripnik, M.L. Perrin, Marcel Mayor, Fabian Pauly, H.S.J. van der Zant

Research output: Contribution to conferencePosterScientific

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A great interest of molecular electronics comes from its change in electronic structure through external stimuli, which provides functionality at the single-molecule level. Mechanically-controlled break junction (MCBJ) is a great tool for characterizing molecular properties and their response to different stimuli including light, solvent and importantly, mechanical deformation1. In our recent MCBJ experiment, we showed that the conductance of a spring-like molecule can be mechanically tuned up to an order of magnitude at room temperature2. The physical origin of such feature is a consequence of destructive quantum interference between the frontier orbitals. This indicates not only a possible application for mechanical sensors based on this class of molecules, but also demonstrates a good example of quantum interference effect in single molecules. Following this intriguing result, we investigate other properties of this molecule, such as I-V characteristics at low temperature and thermopower. We are also exploring other molecules with similar spring-like structures, where quantum interference effect is expected to manifest.
Original languageEnglish
Number of pages1
Publication statusPublished - 2019
EventSPICE-Workshop Molecular Electro-Opto-Spintronics 2019 - Mainz, Germany
Duration: 15 Oct 201918 Oct 2019


ConferenceSPICE-Workshop Molecular Electro-Opto-Spintronics 2019
Internet address


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