Direct observation of nanometer-scale pinning sites in (Nd 0.33Eu0.20Gd0.47)Ba2Cu 3O7-δ single crystals

P. Das, M. R. Koblischka, S. Turner, G. Van Tendeloo, Th Wolf, M. Jirsa, U. Hartmann

研究成果: Article査読

5 被引用数 (Scopus)

抄録

We report on the observation of self-organized stripe-like structures on the as-grown surface and in the bulk of (Nd,Eu,Gd)Ba2Cu 3Oy single crystals. The periodicity of the stripes on the surface lies between 500-800 nm. These are possibly the growth steps of the crystal. Transmission electron microscopy investigations revealed stripes of periodicity in the range of 20-40 nm in the bulk. From electron back scattered diffraction investigations, no crystallographic misorientation due to the nanostripes has been found. Scanning tunneling spectroscopic experiments revealed nonsuperconducting regions, running along twin directions, which presumably constitute strong pinning sites.

本文言語English
論文番号37005
ジャーナルEPL
83
3
DOI
出版ステータスPublished - 2008 8 1
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Direct observation of nanometer-scale pinning sites in (Nd <sub>0.33</sub>Eu<sub>0.20</sub>Gd<sub>0.47</sub>)Ba<sub>2</sub>Cu <sub>3</sub>O<sub>7-δ</sub> single crystals」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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