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  • Dubois, Valentin J.KTH,Mikro- och nanosystemteknik (author)

Massively parallel fabrication of crack-defined gold break junctions featuring sub-3 nm gaps for molecular devices

  • Article/chapterEnglish2018

Publisher, publication year, extent ...

  • 2018-08-24
  • Nature Publishing Group,2018
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-234594
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-234594URI
  • https://doi.org/10.1038/s41467-018-05785-2DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20180914
  • Break junctions provide tip-shaped contact electrodes that are fundamental components of nano and molecular electronics. However, the fabrication of break junctions remains notoriously time-consuming and difficult to parallelize. Here we demonstrate true parallel fabrication of gold break junctions featuring sub-3 nm gaps on the wafer-scale, by relying on a novel self-breaking mechanism based on controlled crack formation in notched bridge structures. We achieve fabrication densities as high as 7 million junctions per cm(2), with fabrication yields of around 7% for obtaining crack-defined break junctions with sub-3 nm gaps of fixed gap width that exhibit electron tunneling. We also form molecular junctions using dithiol-terminated oligo(phenylene ethynylene) (OPE3) to demonstrate the feasibility of our approach for electrical probing of molecules down to liquid helium temperatures. Our technology opens a whole new range of experimental opportunities for nano and molecular electronics applications, by enabling very large-scale fabrication of solid-state break junctions.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Raja, Shyamprasad NatarajanKTH,Mikro- och nanosystemteknik(Swepub:kth)u1mstzzw (author)
  • Gehring, PascalDelft Univ Technol, Kavli Inst Nanosci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands. (author)
  • Caneva, SabinaDelft Univ Technol, Kavli Inst Nanosci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands. (author)
  • van der Zant, Herre S. J.Delft Univ Technol, Kavli Inst Nanosci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands. (author)
  • Niklaus, Frank,1971-KTH,Mikro- och nanosystemteknik(Swepub:kth)u1bcu8r2 (author)
  • Stemme, Göran,1958-KTH,Mikro- och nanosystemteknik(Swepub:kth)u1oyebfq (author)
  • KTHMikro- och nanosystemteknik (creator_code:org_t)

Related titles

  • In:Nature Communications: Nature Publishing Group92041-1723

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