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Massively parallel ...
Massively parallel fabrication of crack-defined gold break junctions featuring sub-3 nm gaps for molecular devices
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- Dubois, Valentin J. (author)
- KTH,Mikro- och nanosystemteknik
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- Raja, Shyamprasad Natarajan (author)
- KTH,Mikro- och nanosystemteknik
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- Gehring, Pascal (author)
- Delft Univ Technol, Kavli Inst Nanosci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands.
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- Caneva, Sabina (author)
- Delft Univ Technol, Kavli Inst Nanosci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands.
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- van der Zant, Herre S. J. (author)
- Delft Univ Technol, Kavli Inst Nanosci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands.
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- Niklaus, Frank, 1971- (author)
- KTH,Mikro- och nanosystemteknik
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- Stemme, Göran, 1958- (author)
- KTH,Mikro- och nanosystemteknik
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(creator_code:org_t)
- 2018-08-24
- 2018
- English.
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In: Nature Communications. - : Nature Publishing Group. - 2041-1723. ; 9
- Related links:
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- 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
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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