Nonlinear transport properties of atomic copper point contacts

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2023
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We report studies on the nonlinear electronic transport properties of copper point contacts. Utilizing the mechanically controllable break junction technique, various contact sizes can be realized to study ensemble-averaged differential conductance spectra at low temperatures. We investigate signatures of phonon excitations for contact sizes down to the atomic scale, where conductance fluctuations arise superimposing the phonon signatures. Applying high bias voltages to atomic-size copper contacts reveal additional features caused by atomic rearrangements.

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530 Physik
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Electromigration, Electronic transport, Conductance fluctuations, Phonons, Transport properties, Break junction, Point contacts, Junction resistance, Atomic structure, Transition metals
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ISO 690STROHMEIER, Marcel, Kim KIRCHBERGER, Elke SCHEER, 2023. Nonlinear transport properties of atomic copper point contacts. In: Low Temperature Physics. AIP Publishing. 2023, 49(7), pp. 827-833. ISSN 1063-777X. eISSN 1090-6517. Available under: doi: 10.1063/10.0019693
BibTex
@article{Strohmeier2023Nonli-67367,
  year={2023},
  doi={10.1063/10.0019693},
  title={Nonlinear transport properties of atomic copper point contacts},
  number={7},
  volume={49},
  issn={1063-777X},
  journal={Low Temperature Physics},
  pages={827--833},
  author={Strohmeier, Marcel and Kirchberger, Kim and Scheer, Elke}
}
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