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

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

研究成果: Article

5 引用 (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.

元の言語English
記事番号37005
ジャーナルEPL
83
発行部数3
DOI
出版物ステータスPublished - 2008 8 1
外部発表Yes

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periodic variations
single crystals
misalignment
transmission electron microscopy
scanning
diffraction
crystals
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

これを引用

Direct observation of nanometer-scale pinning sites in (Nd 0.33Eu0.20Gd0.47)Ba2Cu 3O7-δ single crystals. / Das, P.; Koblischka, Michael Rudolf; Turner, S.; Van Tendeloo, G.; Wolf, Th; Jirsa, M.; Hartmann, U.

:: EPL, 巻 83, 番号 3, 37005, 01.08.2008.

研究成果: Article

Das, P. ; Koblischka, Michael Rudolf ; Turner, S. ; Van Tendeloo, G. ; Wolf, Th ; Jirsa, M. ; Hartmann, U. / Direct observation of nanometer-scale pinning sites in (Nd 0.33Eu0.20Gd0.47)Ba2Cu 3O7-δ single crystals. :: EPL. 2008 ; 巻 83, 番号 3.
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