2017年2月
Effect of ion irradiation on surface morphology and superconductivity of BaFe2(As1-xPx)(2) films
APPLIED SURFACE SCIENCE
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- 巻
- 395
- 号
- 開始ページ
- 9
- 終了ページ
- 15
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.apsusc.2016.07.016
- 出版者・発行元
- ELSEVIER SCIENCE BV
We have irradiated epitaxial thin films of BaFe2(As1-xPx)(2) with x similar or equal to 0.2 (optimal doping) with Au ions having an energy of 250 MeV. We have used two different fluences, Phi(1) = 2.4 x 10(11) cm(-2) and Phi(2) = 7.3 x 10(11) cm(-2), and we have studied the effects of irradiation on the surface morphology, on the resistivity and on the critical temperature. We have found that irradiation progressively destroys the very clear and interconnected growth terraces typical of the pristine surface, leading first to their smoothening - accompanied by the appearance of localized defects - and then to a completely disordered surface. The residual resistivity increases by almost 60%, but the critical temperature decreases very little (i.e. by about 2%) on going from the pristine film to the most irradiated one. The possible role of the substrate in these results is discussed. (C) 2016 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.apsusc.2016.07.016
- ISSN : 0169-4332
- eISSN : 1873-5584
- Web of Science ID : WOS:000390428300003