Near-Field nanoscopy of current-induced excess noise in graphene

K. T. Lin, Q. Weng, H. Nema, S. Kim, K. Sugawara, T. Otsuji, S. Komiyama, Y. Kajihara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We describe a near-field nanoimaging method employed to spatially map the current-induced excess noise occurring in a bilayer graphene constriction with passive scanning near-field microscope (s-SNOM). We find that the excess noise, manifesting itself as fluctuating electromagnetic evanescent fields generated on the sample surface, is discernible only in the constricted region and increases linearly with increasing current. The passive s-SNOM thus proves to be a unique non-invasive experimental tool for investigating the electron transport mechanism via noise mapping in graphene device at the nanometer scale.

Original languageEnglish
Title of host publication2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2017
PublisherIEEE Computer Society
ISBN (Electronic)9781509060481
DOIs
Publication statusPublished - 2017 Oct 12
Event42nd International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2017 - Cancun, Quintana Roo, Mexico
Duration: 2017 Aug 272017 Sep 1

Publication series

NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
ISSN (Print)2162-2027
ISSN (Electronic)2162-2035

Other

Other42nd International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2017
CountryMexico
CityCancun, Quintana Roo
Period17/8/2717/9/1

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Lin, K. T., Weng, Q., Nema, H., Kim, S., Sugawara, K., Otsuji, T., Komiyama, S., & Kajihara, Y. (2017). Near-Field nanoscopy of current-induced excess noise in graphene. In 2017 42nd International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2017 [8067243] (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz). IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz.2017.8067243