Print Email Facebook Twitter Inelastic cotunneling with energy-dependent contact transmission Title Inelastic cotunneling with energy-dependent contact transmission Author Blok, S. (Universiteit Leiden) Agundez Mojarro, R.R. (TU Delft QN/Theoretical Physics; Kavli institute of nanoscience Delft) Maduro, L. A. (Universiteit Leiden) Blaauboer, M. (TU Delft QN/Blaauboer Group; Kavli institute of nanoscience Delft) Van Der Molen, S. J. (Universiteit Leiden) Date 2017-03-07 Abstract We investigate inelastic cotunneling in a model system where the charging island is connected to the leads through molecules with energy-dependent transmission functions. To study this problem, we propose two different approaches. The first is a pragmatic approach that assumes Lorentzian-like transmission functions that determine the transmission probability to the island. Using this model, we calculate current versus voltage (IV) curves for increasing resonance level positions of the molecule. We find that shifting the resonance energy of the molecule away from the Fermi energy of the contacts leads to a decreased current at low bias, but as bias increases, this difference decreases and eventually inverses. This is markedly different from IV behavior outside the cotunneling regime. The second approach involves multiple cotunneling where also the molecules are considered to be in the Coulomb blockade regime. We find here that when Ec≫eV,kBT, the IV behavior approaches the original cotunneling behavior proposed by Averin and Nazarov [Phys. Rev. Lett. 65, 2446-2449 (1990)]. To reference this document use: http://resolver.tudelft.nl/uuid:a34a8fe6-91f2-4dcb-92bc-a395e9bfdee1 DOI https://doi.org/10.1063/1.4975809 Embargo date 2018-02-16 ISSN 0021-9606 Source Journal of Chemical Physics, 146 (9) Part of collection Institutional Repository Document type journal article Rights © 2017 S. Blok, R.R. Agundez Mojarro, L. A. Maduro, M. Blaauboer, S. J. Van Der Molen Files PDF 1.4975809.pdf 6.29 MB Close viewer /islandora/object/uuid:a34a8fe6-91f2-4dcb-92bc-a395e9bfdee1/datastream/OBJ/view