@article{Klockner2017Tunin-41112,
  year={2017},
  doi={10.1103/PhysRevB.96.245419},
  title={Tuning the thermal conductance of molecular junctions with interference effects},
  number={24},
  volume={96},
  issn={2469-9950},
  journal={Physical Review B},
  author={Klöckner, Jan C. and Cuevas, Juan Carlos and Pauly, Fabian},
  note={Article Number: 245419}
}

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    <dcterms:abstract xml:lang="eng">We present an ab initio study of the role of interference effects in the thermal conductance of single-molecule junctions. To be precise, using a first-principles transport method based on density functional theory, we analyze the coherent phonon transport in single-molecule junctions made of several benzene and oligo(phenylene ethynylene) derivatives. We show that the thermal conductance of these junctions can be tuned via the inclusion of substituents, which induces destructive interference effects and results in a decrease of the thermal conductance with respect to the unmodified molecules. In particular, we demonstrate that these interference effects manifest as antiresonances in the phonon transmission, whose energy positions can be tuned by varying the mass of the substituents. Our work provides clear strategies for the heat management in molecular junctions and, more generally, in nanostructured metal-organic hybrid systems, which are important to determine how these systems can function as efficient energy-conversion devices such as thermoelectric generators and refrigerators.</dcterms:abstract>
    <dc:creator>Pauly, Fabian</dc:creator>
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    <dc:creator>Cuevas, Juan Carlos</dc:creator>
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    <dc:contributor>Cuevas, Juan Carlos</dc:contributor>
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