The 65h JSAP Spring Meeting, 2018

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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.)

3:15 PM - 3:30 PM

[18p-B403-8] Superconducting Properties and Microstructure of Au-ion irradiated FeSe0.5Te0.5 Films

〇Toshinori Ozaki1, Qiang Li2 (1.KwanGaku Univ., 2.BNL)

Keywords:iron-based supercondcutor, thin film

In order to elucidate the relationship between heavy ion irradiation-induced defect structure and the two critical parameters - Tc and Jc, Au-ions with 6 MeV to a dose of 1´1012 Au cm–2 have been irradiated into iron-chalcogenide FeSe0.5Te0.5 thin films. A nearly 70 % increase in Jc is observed under 9 T//c at 10 K with little reduction of Tc. Our results show that Au-ion irradiation at a few MeV is sufficient in order to provide a strong pinning defect landscape in iron-chalcogenide superconducting films.