Soft nanostructuring of YBCO Josephson Junctions by phase separation

David Gustafsson; Henrik Pettersson; Beniamino Iandolo; Eva Olsson; Thilo Bauch; Floriana Lombardi

doi:10.1021/nl103311a

Soft nanostructuring of YBCO Josephson Junctions by phase separation

Superconductivity 2011-12-14 v1

Authors: David Gustafsson , Henrik Pettersson , Beniamino Iandolo , Eva Olsson , Thilo Bauch , Floriana Lombardi

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Abstract

We have developed a new method to fabricate biepitaxial YBa2Cu3O(7-x) (YBCO) Josephson junctions at the nanoscale, allowing junctions widths down to 100 nm and simultaneously avoiding the typical damage in grain boundary interfaces due to conventional patterning procedures. By using the competition between the superconducting YBCO and the insulating Y2BaCuO5 phases during film growth, we formed nanometer sized grain boundary junctions in the insulating Y2BaCuO5 matrix as confirmed by high resolution transmission electron microscopy. Electrical transport measurements give clear indications that we are close to probing the intrinsic properties of the grain boundaries.

Keywords

josephson junctions silicon physics nanoparticles

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@article{arxiv.1112.2841,
  title  = {Soft nanostructuring of YBCO Josephson Junctions by phase separation},
  author = {David Gustafsson and Henrik Pettersson and Beniamino Iandolo and Eva Olsson and Thilo Bauch and Floriana Lombardi},
  journal= {arXiv preprint arXiv:1112.2841},
  year   = {2011}
}

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16 pages, 6 figures

Soft nanostructuring of YBCO Josephson Junctions by phase separation

Abstract

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