Engineering of YBa2Cu3O7-δ grain boundary Josephson junctions by Au nanocrystals

被引：8
作者：
Michalowski, P. [1 ]
Schmidt, M. [1 ]
Schmidl, F. [1 ]
Grosse, V. [1 ]
Kuhwald, D. [1 ]
Katzer, C. [1 ]
Huebner, U. [2 ]
Seidel, P. [1 ]
机构：
[1] Univ Jena, Inst Festkorperphys, D-07743 Jena, Germany
[2] Inst Photon Technol, D-07745 Jena, Germany
来源：
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2011年 / 5卷 / 08期
关键词：
grain boundaries; nanocrystals; superconducting devices; thin films; Josephson junctions; cuprate superconductors; ELECTRICAL-TRANSPORT; SCALING BEHAVIOR; THIN-FILMS; NOISE;
D O I：
10.1002/pssr.201105228
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We prepared and investigated grain boundary Josephson junctions based on SrTiO3 bicrystal substrates. During the deposition of YBa2Cu3O7-delta (YBCO) gold nanocrystals forming from an intermediate gold layer can modify the crystalline structure and thus the properties of the YBCO grain boundaries. The variation of the film thickness of the Au seed layer changes the growth conditions of the YBCO film and the Au nanocrystals. The values of the characteristic ICRN product do not change whereas the values of the critical current I-C decrease. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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收藏
页码：268 / 270
页数：3
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