Print Email Facebook Twitter Efficient heating of single-molecule junctions for thermoelectric studies at cryogenic temperatures Title Efficient heating of single-molecule junctions for thermoelectric studies at cryogenic temperatures Author Gehring, P. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) van der Star, M. (Kavli institute of nanoscience Delft; Student TU Delft) Evangeli, Charalambos (University of Oxford; Lancaster University) Le Roy, Jennifer J. (University of Oxford) Bogani, Lapo (University of Oxford) Kolosov, Oleg V. (Lancaster University) van der Zant, H.S.J. (TU Delft QN/van der Zant Lab; Kavli institute of nanoscience Delft) Date 2019 Abstract The energy dependent thermoelectric response of a single molecule contains valuable information about its transmission function and its excited states. However, measuring it requires devices that can efficiently heat up one side of the molecule while being able to tune its electrochemical potential over a wide energy range. Furthermore, to increase junction stability, devices need to operate at cryogenic temperatures. In this work, we report on a device architecture to study the thermoelectric properties and the conductance of single molecules simultaneously over a wide energy range. We employ a sample heater in direct contact with the metallic electrodes contacting the single molecule which allows us to apply temperature biases up to ΔT = 60 K with minimal heating of the molecular junction. This makes these devices compatible with base temperatures Tbath < 2 K and enables studies in the linear (Δ T ≪ T molecule) and nonlinear (Δ T ≫ T molecule) thermoelectric transport regimes. To reference this document use: http://resolver.tudelft.nl/uuid:7b602c3c-75c6-4927-b5be-6faab1801316 DOI https://doi.org/10.1063/1.5118861 Embargo date 2020-02-13 ISSN 0003-6951 Source Applied Physics Letters, 115 (7) Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2019 P. Gehring, M. van der Star, Charalambos Evangeli, Jennifer J. Le Roy, Lapo Bogani, Oleg V. Kolosov, H.S.J. van der Zant Files PDF 1.5118861Taverne.pdf 1.28 MB Close viewer /islandora/object/uuid:7b602c3c-75c6-4927-b5be-6faab1801316/datastream/OBJ/view