Effects of particle irradiations on vortex states in iron-based superconductors

被引：96

作者：

Tamegai, Tsuyoshi ^{[1
]}

Taen, Toshihiro ^{[1
,2
]}

Yagyuda, Hidenori ^{[1
]}

Tsuchiya, Yuji ^{[1
]}

Mohan, Shyam ^{[1
]}

Taniguchi, Tomotaka ^{[1
]}

Nakajima, Yasuyuki ^{[1
,2
]}

Okayasu, Satoru ^{[3
]}

Sasase, Masato ^{[4
]}

Kitamura, Hisashi ^{[5
]}

Murakami, Takeshi ^{[6
]}

Kambara, Tadashi ^{[7
]}

Kanai, Yasuyuki ^{[8
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[2] Transformat Res Project Iron Pnictides TRIP, JST, Bunkyo Ku, Tokyo 1138656, Japan

[3] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[4] Wakasa Wan Energy Res Ctr, Res & Dev Grp, Tsuruga, Fukui 9140192, Japan

[5] Natl Inst Radiol Sci, Radiat Measurement Res Sect, Inage Ku, Chiba 2638555, Japan

[6] Natl Inst Radiol Sci, Dept Accelerator & Med Phys, Inage Ku, Chiba 2638555, Japan

[7] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan

[8] RIKEN, Atom Phys Lab, Wako, Saitama 3510198, Japan

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2012年 / 25卷 / 08期

关键词：

COLUMNAR DEFECTS; FIELD; DYNAMICS; YBA2CU3O7-DELTA; CREEP; PHASE;

D O I：

10.1088/0953-2048/25/8/084008

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Various kinds of energetic particles are irradiated into iron-based superconductors, and their effects on the critical current density (J(c)) and vortex dynamics have been systematically studied. It is found that J(c) is enhanced and vortex dynamics is strongly suppressed by energetic particles having a sufficient energy deposition rate, similar to the case of high temperature cuprate superconductors. The enhancement of J(c), in general, persists up to much higher irradiation doses than in cuprates. However, details of the effect of irradiation depend on the kind of ion species and their energies. Even with the same ions and energies, the effect is not universal for different kinds of iron-based superconductors. The correlated nature of defects created by heavy-ion irradiation is confirmed by the angular dependence of irreversible magnetization.

引用

页数：14

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