Pinning enhancement of NdFeAs(O,F) thin films by geometrical effect

Kazumasa Iida; Sandra Kauffmann-Weiss; Omura Taito; Takuya Matsumoto; Chiara Tarantini; Jan Jaroszynski; Takafumi Hatano; Boll Torben; Marco Langer; Bernhard Holzapfel; Jens Haenisch; Hiroshi Ikuta

Presentation information

Oral presentation

11 Superconductivity » 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

[18p-B403-1~19] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

Sun. Mar 18, 2018 1:15 PM - 6:30 PM B403 (53-403)

Toshinori Ozaki(Kwansei Gakuin Univ.), Ryo Teranishi(Kyushu Univ.), Yusuke Ichino(Nagoya Univ.)

3:30 PM - 3:45 PM

[18p-B403-9] Pinning enhancement of NdFeAs(O,F) thin films by geometrical effect

〇Kazumasa Iida¹, Sandra Kauffmann-Weiss², Omura Taito¹, Takuya Matsumoto¹, Chiara Tarantini³, Jan Jaroszynski³, Takafumi Hatano¹, Boll Torben², Marco Langer², Bernhard Holzapfel², Jens Haenisch², Hiroshi Ikuta¹ (1.Nagoya Univ., 2.KIT, 3.ASC-NHMFL)

Keywords:Fe-based superconductors, thin film, pinning force density

The critical current characteristics of NdFeAs(O,F) is inferior to that of BaFe₂As₂ system, albeit the former has a higher T_c than the latter. Here we report on the pinning enhancement of a NdFeAs(O,F) thin film. A 20 nm thick NdFeAs(O,F) thin film showed a record pinning force density F_p of over 1 TN/m³ at 4.2 K. To the best of our knowledge, F_p over 1 TN/m³ is the highest value ever reported for iron based superconductors.