Highly effective and isotropic pinning in epitaxial Fe(Se,Te) thin films grown on CaF2 substrates

V. Braccini, S. Kawale, E. Reich, E. Bellingeri, L. Pellegrino, A. Sala, M. Putti, K. Higashikawa, T. Kiss, B. Holzapfel, C. Ferdeghini

研究成果: ジャーナルへの寄稿学術誌査読

55 被引用数 (Scopus)

抄録

We report on the isotropic pinning obtained in epitaxial Fe(Se,Te) thin films grown on CaF2(001) substrate. High critical current density values - larger than 1 MA/cm2 in self field and liquid helium - are reached together with a very weak dependence on the magnetic field and a complete isotropy. Analysis through transmission electron microscopy evidences the presence of defects looking like lattice disorder at a very small scale, between 5 and 20 nm, which are thought to be responsible for such isotropic behavior in contrast to what was observed on SrTiO3, where defects parallel to the c-axis enhance pinning in that direction.

本文言語英語
論文番号172601
ジャーナルApplied Physics Letters
103
17
DOI
出版ステータス出版済み - 10月 21 2013

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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