Format

Send to

Choose Destination
See comment in PubMed Commons below
Nano Lett. 2010 Oct 13;10(10):4206-10. doi: 10.1021/nl102584j.

Achieving the theoretical depairing current limit in superconducting nanomesh films.

Author information

  • 1Division of Chemistry and Chemical Engineering, California Institute of Technology, MC 127-72, Pasadena, California 91125, USA.

Abstract

We show the theoretical depairing current limit can be achieved in a robust fashion in highly ordered superconductor nanomesh films having spatial periodicities smaller than both the superconducting coherence length and the magnetic penetration depth. For a niobium nanomesh film with 34 nm spatial periodicity, the experimental critical current density is enhanced by more than 17 times over the continuous film and is in good agreement with the depairing limit over the entire measured temperature range. The nanomesh superconductors are also less susceptible to thermal fluctuations when compared to nanowire superconductors. T(c) values similar to the bulk film are achieved, and the nanomeshes are capable of retaining superconductivity to higher fields relative to the bulk. In addition, periodic oscillations in T(c) are observed as a function of field, reflecting the highly ordered nanomesh structure.

PMID:
20738113
DOI:
10.1021/nl102584j
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Chemical Society
    Loading ...
    Support Center