Nanostripes in SmBa2Cu3O7-δ single crystals: Origin and peak effect

A. Hu, X. Yao, M. Winter, H. Zhou, N. Sakai, M. R. Koblischka, M. Murakami, I. Hirabayashi

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)


Nanoscopic surface stripes were observed in high quality SmBa 2Cu3O7-δ single crystals grown by a top-seeded pulling growth and their roles on the peak effect and enhanced flux pinning were investigated with a SQUID magnetometer. The crystal surface exhibited an ordered modulation with a roughness of 1-2 nm and a wavelength of about 50 nm. The study evidenced that such a periodic array is not dependent on surface processing. The analysis further unveiled that nanoscaled stripes may act as a kind of δTc-style pinning defects which contribute to an enhanced peak effect.

Original languageEnglish
Pages (from-to)441-445
Number of pages5
JournalPhysica C: Superconductivity and its applications
Issue numberI
Publication statusPublished - 2005 Oct 1
EventProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
Duration: 2004 Nov 232004 Nov 25


  • Flux pinning
  • Nanoscaled defects
  • Peak effect
  • Surface stripes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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