Quantum interference device made by DNA templating of superconducting nanowires.
Science
; 308(5729): 1762-5, 2005 Jun 17.
Article
in En
| MEDLINE
| ID: mdl-15961664
ABSTRACT
The application of single molecules as templates for nanodevices is a promising direction for nanotechnology. We used a pair of suspended DNA molecules as templates for superconducting two-nanowire devices. Because the resulting wires are very thin, comparable to the DNA molecules themselves, they are susceptible to thermal fluctuations typical for one-dimensional superconductors and exhibit a nonzero resistance over a broad temperature range. We observed resistance oscillations in these two-nanowire structures that are different from the usual Little-Parks oscillations. Here, we provide a quantitative explanation for the observed quantum interference phenomenon, which takes into account strong phase gradients created in the leads by the applied magnetic field.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
DNA
/
Nanostructures
/
Alloys
Language:
En
Journal:
Science
Year:
2005
Document type:
Article