Origin of noise in structures with tuned nanoconstrictions

V. Sydoruk, M. Petrychuk, L.K. Vandamme, S. Pud, J. Li, D. Mayer, S. Vitusevich

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


Thin conducting gold films with nanoconstriction are characterized by noise spectroscopy with and without a single 1,4-benzenedithiol (BDT) molecule between the contacts. The low frequency noise spectral density demonstrates the 1/fα type behavior with a factor, α, near to 1. It is shown, that the normalized noise spectral density is proportional to the resistance R in power 3/2 for the case without a molecule as well as with a molecule. The experimental findings are in good agreement with theoretically predicted results. The results obtained are interpreted in terms of the fine tuning and evolution of structures with a nanoconstriction region. Structures with a single molecule demonstrate a lower noise level compared with the structures without it. Our results are promising for the development of nanostructures for future molecular electronics, functioning at room temperature.

Original languageEnglish
Title of host publication2013 22nd International Conference on Noise and Fluctuations, ICNF 2013
Place of PublicationPiscataway, NJ
ISBN (Electronic)978-1-4799-0671-0
ISBN (Print)978-1-4799-0668-0
Publication statusPublished - 2013
Externally publishedYes
Event2013 22nd International Conference on Noise and Fluctuations, ICNF 2013 - Montpellier, France
Duration: 24 Jun 201328 Jun 2013


Conference2013 22nd International Conference on Noise and Fluctuations, ICNF 2013


  • Flicker noise
  • Nanoconstriction
  • Single molecule
  • Transport properties
  • Tunneling


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