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Critical current density and vortex dynamics in pristine and proton-irradiated Ba0.6K0.4Fe2As2
https://repo.qst.go.jp/records/47400
https://repo.qst.go.jp/records/47400bc0c2d55-5d5f-4937-b656-84115420d4db
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2016-05-18 | |||||
| タイトル | ||||||
| タイトル | Critical current density and vortex dynamics in pristine and proton-irradiated Ba0.6K0.4Fe2As2 | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Taen, Toshihiro
× Taen, Toshihiro× Ohtake, Fumiaki× Pyon, Sunseng× Tamegai, Tsuyoshi× Kitamura, Hisashi× 田縁 俊光× 大竹 史哲× 卞 舜生× 為ケ井 強× 北村 尚 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The screening current density (J) and vortex pinning properties for H| | c are studied in optimally hole-doped Ba0.6K0.4Fe2As2 single crystals with a superconducting transition of Tc = 38.6 K. We utilize the irreversible magnetization and its relaxation to evaluate the screening current density and vortex dynamics before and after the introduction of point defects created by 3-MeV proton (H+) irradiation with a dose of 5.8×10 16H+cm2. In the as-grown crystal, both J and vortex dynamics are strongly influenced by temperature and magnetic field, indicating that the predominant pinning is not the weak-collective pinning but the strong pinning. With an introduction of point defects, J in the H+-irradiated crystal at 2 K reaches 1.1×10 7 cm−2, which is one of the largest values in iron-based superconductors. In contrast to the as-grown sample, the sensitivity to the temperature and magnetic field becomes quite mild, and the vortex system is described by a simple weak-collective pinning scenario. | |||||
| 書誌情報 |
Superconductor Science and Technology 巻 28, 号 8, p. 085003-1-085003-8, 発行日 2015-08 |
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| 出版者 | ||||||
| 出版者 | IOP Publishing Ltd | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0953-2048 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/0953-2048/28/8/085003 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://iopscience.iop.org/0953-2048/28/8/085003 | |||||
| 関連名称 | http://iopscience.iop.org/0953-2048/28/8/085003 | |||||
